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       Welcome!
   Chronic Disease
 Program Planning:
Discussing Review-
  Level Evidence
  You will be placed on hold until the webinar begins.
The webinar will begin shortly, please remain on the line.
What’s the evidence?
 Booth, M., O’Brodovich, H., Finegood, D. (2004). Addressing
  childhood obesity: The evidence for action. Ottawa, ON: Canadian
  Institutes of Health Research, Institute of Nutrition, Metabolism
  and Diabetes.
 Shiell, A., Spilchak, P., Ladhani, N., Hawe, P., Lorenzetti, D. (2008).
  A systematic review of population health approaches to prevent type II
  diabetes: Report to the Public Health Agency of Canada. Calgary, AB:
  Population Health Intervention Research Centre (PHIRC).
 O’Brien, K., Nixon, S., Tynan, A.M., Glazier, R.H. (2010). Aerobic
  exercise interventions for adults living with HIV/AIDS. Cochrane
  Database of Systematic Reviews, Issue 8, Art. No.: CD001796.
 Farmer, A.P., Legare, F., Grimshaw, J., Harvey, E., McGowan, J.L.,
  et al. (2008). Printed educational materials: Effects on professional
  practice and health care outcomes. Cochrane Database of Systematic
  Reviews, Issue 3, Art. No.: CD004398.
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This webinar has been made possible with support from the
                  Canadian Institutes of Health Research




       Welcome!
   Chronic Disease
 Program Planning:
Discussing Review-
  Level Evidence
  You will be placed on hold until the webinar begins.
The webinar will begin shortly, please remain on the line.
The Health Evidence Team


Maureen Dobbins                     Kara DeCorby                          Daiva Tirilis
Scientific Director                 Administrative Director               Research Coordinator
Tel: 905 525-9140 ext 22481         Tel: (905) 525-9140 ext. 20461        Tel: (905) 525-9140 ext. 20460
E-mail: dobbinsm@mcmaster.ca        E-mail: kdecorby@health-evidence.ca   E-mail: dtirilis@health-evidence.ca




Lori Greco                 Heather Husson              Robyn Traynor               Lyndsey McRae
Knowledge Broker           Project Manager             Research Coordinator        Research Assistant
What is www.health-evidence.ca?


                     Evidence
                          inform



              Decision Making
Why use www.health-evidence.ca?
 1. Saves you time
 2. Relevant & current evidence
 3. Transparent process
 4. Supports for EIDM available
 5. Easy to use
Meetings, Planning &
Dissemination Project
      CIHR Funded MOP-238541
CIHR-Funded Reviews
 Booth, M., O’Brodovich, H., Finegood, D. (2004). Addressing
  childhood obesity: The evidence for action. Ottawa, ON: Canadian
  Institutes of Health Research, Institute of Nutrition, Metabolism
  and Diabetes.
 Shiell, A., Spilchak, P., Ladhani, N., Hawe, P., Lorenzetti, D. (2008).
  A systematic review of population health approaches to prevent type II
  diabetes: Report to the Public Health Agency of Canada. Calgary, AB:
  Population Health Intervention Research Centre (PHIRC).
 O’Brien, K., Nixon, S., Tynan, A.M., Glazier, R.H. (2010). Aerobic
  exercise interventions for adults living with HIV/AIDS. Cochrane
  Database of Systematic Reviews, Issue 8, Art. No.: CD001796.
 Farmer, A.P., Legare, F., Grimshaw, J., Harvey, E., McGowan, J.L.,
  et al. (2008). Printed educational materials: Effects on professional
  practice and health care outcomes. Cochrane Database of Systematic
  Reviews, Issue 3, Art. No.: CD004398.
Evaluation
 Please check your email for the evaluation
         survey link after the webinar.
       It take 5 minutes to complete!

If you’ve been watching with someone else and did
     not personally register for the webinar, please
   e-mail Jennifer McGugan at mcgugj@mcmaster.ca
                  to be sent the survey.
Questions?
Summary Statement:
Booth (2004)
Overall Considerations
                Considerations for Public Health Practice
 Conclusions from Health Evidence                         General Implications
Interventions that showed improvement in        Public health should support:
obesity outcomes promoted:                      • programs that focus on diet + exercise
• consumption of a healthier diet plus          • physical activity behavior change and dietary
    exercise (vs. diet only)                       change interventions for school children
• increased physical activity in and out-of-    • behavior modification with both diet and
    school                                         physical activity strategies
• healthier diet among school-aged children
• behaviour modification strategies alongside Due to a current lack of evidence, public health
    strategies to improve diet and physical   programs should not include:
    activity                                  • a focus on specific elements of dietary
                                                 interventions
Evidence is not conclusive enough to support: • dietary interventions for pre-school aged
• dietary interventions                          children or minorities
• dietary change interventions for preschool- • reinforcement after obesity treatment
    aged children or minorities               • a focus on modifying factors including age,
• reinforcement after obesity treatment          setting, duration, or initial weight, as a way
• modifying factors (age, duration, etc.)        to modify obesity outcomes
Overall Considerations
                Considerations for Public Health Practice
 Conclusions from Health Evidence                      General Implications
No impact on obesity outcomes were           Due to a lack of effectiveness, public health
observed for interventions on:               should also avoid focus on:
• dietary change                             • cardiovascular risk factor interventions to
• cardiovascular risk factor reduction          modify obesity outcomes
• primary prevention programs for obesity    • primary prevention programs for obesity
• lifestyle exercise strategies              • lifestyle exercise programs
• parental involvement
                                             No current evidence to inform how public
No review-level evidence was identified to   health should address obesity treatment in
address treatment of obesity in minority     minority groups, and programs for these groups
groups.                                      should be evaluated and evaluations shared.
Interpreting the Evidence
Prevention of obesity (6 SR including 34 studies + 6 narrative
reviews; mostly low to moderate quality)
         What’s the evidence?                        Implications for practice & policy
No impact of obesity OR cardiovascular           •   Public health decision makers should not
prevention interventions on adiposity                rely on either obesity prevention or
• Systematic review evidence (4 reviews for          cardiovascular prevention programs for
   which citation analysis was possible): does       decreasing adiposity, given the current
   not support obesity prevention programs           evidence from both systematic and
   (i.e. several school-based) for the reduction     narrative reviews.
   of adiposity. (7/26 studies identified a
   reduction in adiposity)
• Systematic review evidence (1 review – 16
   studies): Cardiovascular prevention
   programs were not effective in decreasing
   adiposity (7/77 showed a positive impact).
• Narrative review evidence (6 reviews):
   insufficient evidence for obesity prevention
   as an adiposity reduction measure.
Interpreting the Evidence
Diet vs. Diet and Exercise (5 reviews)
         What’s the evidence?                     Implications for practice & policy
•   Exercise programs combined with a dietary •   Public Health decision makers should
    intervention offered some improvement in      promote diet and exercise together (as
    adiposity (6 of 10 studies); however the      opposed to diet alone) for the secondary
    extent to which benefits are sustained in     prevention of obesity, and evaluate whether
    long term is unclear)                         long-term benefits are realized.
Interpreting the Evidence
Dietary Interventions (1 meta-analysis (17 studies) + 1 review
of a single study)
          What’s the evidence?                      Implications for practice & policy
•   No impact of specific elements of dietary   •   Based on two SRs of fair quality, there is
    interventions on weight loss.                   insufficient evidence to recommend any
                                                    specific elements of dietary interventions
                                                    for obesity reduction.
Interpreting the Evidence
Physical Activity (PA) Behaviour Change (8 reviews)
         What’s the evidence?                       Implications for practice & policy
•   PA during school hours – high quality       •   Public health should promote PA behaviour
    review evidence (4 reviews) shows that          change interventions to increase PA during
    school-based interventions are effective in     school hours. Programs should be evaluated
    increasing PA during school hours.              to determine whether PA outside school
•   PA outside school hours – there is some         hours is increased.
    (mixed) evidence that school-based          •   Evaluations conducted by public health
    interventions increase PA outside school        should ideally include long-term follow up
    hours.                                          into adulthood.
Interpreting the Evidence
Strategies to promote dietary change (7 SR + 5 narrative
reviews; analysis according to behaviour change model)
          What’s the evidence?                       Implications for practice & policy
•   Preschool children: 7/10 studies in 2 SRs •      Public health should not rely on either
    offer mixed evidence that does not               behavioural or knowledge-based
    conclusively support specific behavioural or     approaches to improve preschool children’s
    knowledge-based strategies to change food-       dietary behaviour.
    related behaviour (e.g. touch/smell/taste    •   Public health should use and evaluate
    new foods, modeling, repeated exposures)         behaviourally-based approaches to improve
•   School-based: 42/59 studies in 6 reviews         dietary behaviour in school-based programs.
    showed some improvement in dietary           •   Public health should evaluate efforts to
    behaviour that was more closely attributed       improve dietary behaviour in minority
    to behaviourally-based approaches rather         populations in order to contribute to the
    than knowledge-based approaches.                 evidence base available.
    Descriptions of strategies are not provided.
•   Minority Populations: 1 low-quality
    review offered no definitive conclusions
    that dietary interventions are effective.
Interpreting the Evidence
Strategies Lifestyle Exercise Strategies (3 reviews citing the
same 3 studies + 1 meta-analysis)
          What’s the evidence?                           Implications for practice & policy
•   Lifestyle exercise was distinct from other       •   Public Health decision makers should not
    exercise programs in that it (1) includes            rely on lifestyle exercise to decrease
    activities of daily living, (2) includes caloric     childhood obesity. However, public health
    expenditure in small increments throughout           should consider other possible benefits to
    the day, and (3) no prescribed intensity.            be derived from the promotion of lifestyle
•   No impact on childhood obesity compared              exercise.
    to either no exercise or other exercise,
    based on the meta-analysis incorporating
    the widest range of evidence.
Interpreting the Evidence
Parental Involvement (4 reviews (13 studies) + 1 meta-analysis)
         What’s the evidence?                      Implications for practice & policy
•   Parental involvement interventions varied, •   Public health should not focus on parental
    with only one study directed solely at         involvement strategies as a way to improve
    parents. A range of interventions were         childhood obesity treatment.
    aimed at both children and parents to
    varying degrees. Intervention elements are
    not well described; but tend to be family-
    oriented and include homework
    assignments, and parents motivating their
    children.
•   No impact on childhood obesity treatment,
    even though there is good evidence in this
    topic area
Interpreting the Evidence
Behaviour Modification Strategies (2 reviews of 9 studies + 1
meta-analysis)
          What’s the evidence?                        Implications for practice & policy
•   Little information provided regarding the     •   Behaviour modification strategies should be
    nature of behaviour modification strategies       considered for use with dietary and physical
    used.                                             activity interventions, and ideally with all
•   Improvement in obesity status when                three strategies combined, in aiming to
    behaviour modification strategies were used       improve obesity status.
    with dietary and physical activity strategies •   Public health should not focus on self-
    in the short-term. Behaviour modification,        control training as an additional strategy for
    dietary AND physical activity strategies          reducing obesity in children.
    together demonstrated greater treatment
    effect than behaviour modification and
    either dietary or PA.
•   No impact of additional or “add-on” self-
    control training on obesity status.
Interpreting the Evidence
Reinforcement (1 review)
          What’s the evidence?                        Implications for practice & policy
•   A single, small (15 subjects) study of fair   •   There is limited evidence at this time to
    quality in one review showed that periodic        support the provision of reinforcement
    reinforcement after obesity treatment             following obesity treatment programs
    enhanced weight loss
Interpreting the Evidence
Factors Influencing Obesity Prevention
          What’s the evidence?                         Implications for practice & policy
•   There is a very limited evidence examining     •   Based on evidence available at this time,
    the effect of setting, duration of treatment       public health should not focus on modifying
    and initial weight status upon which to            factors such as: setting, duration of
    assess the impact on obesity outcomes.             treatment, age, and initial weight status to
                                                       improve obesity outcomes. It is possible
                                                       that relationships between these factors
                                                       and obesity may exist; however, they are
                                                       unclear at this time.
Overall Considerations
                Considerations for Public Health Practice
 Conclusions from Health Evidence                         General Implications
Interventions that showed improvement in        Public health should support:
obesity outcomes promoted:                      • programs that focus on diet + exercise
• consumption of a healthier diet plus          • physical activity behavior change and dietary
    exercise (vs. diet only)                       change interventions for school children
• increased physical activity in and out-of-    • behavior modification with both diet and
    school                                         physical activity strategies
• healthier diet among school-aged children
• behaviour modification strategies alongside Due to a current lack of evidence, public health
    strategies to improve diet and physical   programs should not include:
    activity                                  • a focus on specific elements of dietary
                                                 interventions
Evidence is not conclusive enough to support: • dietary interventions for pre-school aged
• dietary interventions                          children or minorities
• dietary change interventions for preschool- • reinforcement after obesity treatment
    aged children or minorities               • a focus on modifying factors including age,
• reinforcement after obesity treatment          setting, duration, or initial weight, as a way
• modifying factors (age, duration, etc.)        to modify obesity outcomes
Overall Considerations
                Considerations for Public Health Practice
 Conclusions from Health Evidence                      General Implications
No impact on obesity outcomes were           Due to a lack of effectiveness, public health
observed for interventions on:               should also avoid focus on:
• dietary change                             • cardiovascular risk factor interventions to
• cardiovascular risk factor reduction          modify obesity outcomes
• primary prevention programs for obesity    • primary prevention programs for obesity
• lifestyle exercise strategies              • lifestyle exercise programs
• parental involvement
                                             No current evidence to inform how public
No review-level evidence was identified to   health should address obesity treatment in
address treatment of obesity in minority     minority groups, and programs for these groups
groups.                                      should be evaluated and evaluations shared.
Questions?
Summary Statement:
Shiell (2008)
Overall Considerations
                 Considerations for Public Health Practice
  Conclusions from Health Evidence                              General Implications
School-based interventions led to:                   The most current, rigorous evidence does not
• no effects on physical activity, nutrition, BMI,   support school-based interventions to reduce
   fruit and vegetable intake, energy from fat,      Type II diabetes or its risk factors. Findings from
   total serum cholesterol, and VO2 Max              less rigorous studies do support the use of
   (rigorous studies)                                school-based interventions.
• improvements in triglycerides, physical
   activity, systolic and diastolic blood            Community-based interventions are currently
   pressure, percentage body fat, smaller            recommended for increasing physical activity.
   increase in BMI, and waist circumference
   among boys                                        Worksite-based interventions are suggested for
                                                     increasing smoking cessation rates.
Community-based interventions led to:
• increase in self-reported physical activity        There is limited, good quality evidence. Results
                                                     should be applied cautiously to public health
Worksite-based interventions led to:                 practice, and any associated public health
• increase in smoking cessation rates                programs need to evaluate the impact of these
                                                     interventions.
Interpreting the Evidence
School-based interventions (5 RCTs of high quality, 6 quasi-
experimental of moderate quality)
          What’s the evidence?                       Implications for practice & policy
Among studies of moderate methodological         •   Given evidence is mixed (rigorous studies
quality, a statistically significant impact was      generally report no effect, lower quality
observed on:                                         studies report significant effects), school-
• Triglycerides, blood pressure, percentage          based interventions may not be an effective
   body fat, participation in rigorous physical      public health strategy for reducing Type II
   activity, waist circumference, and(less of an     diabetes and its risk factors.
   increase in BMI compared to usual care.       •   Given some interventions affect boys and
• Some effects observed among girls only and         girls differently, careful consideration of the
   others among boys only.                           different facilitators and barriers to physical
                                                     activity among boys and girls is needed, if
Among the most rigorous studies:                     these interventions are implemented.
• No impact on physical activity, diet, total
  serum cholesterol,VO2 Max, or BMI.
Interpreting the Evidence
Community-based interventions (1 study; moderate quality)

          What’s the evidence?                          Implications for practice & policy
•   One studies of moderate methodological          •   Community-based interventions are
    quality, statistically significant impact was       supported for increasing physical activity.
    observed on self-reported physical activity.        Results should be interpreted cautiously as
                                                        physical activity was measured through self-
                                                        report, which may overestimate the true
                                                        treatment effect.
                                                    •   These findings must be re-evaluated as
                                                        more rigorous evidence emerges.
Interpreting the Evidence
Worksite-based interventions (1 study; moderate quality)

          What’s the evidence?                       Implications for practice & policy
•   One study of moderate methodological         •    Worksite-based interventions are
    quality found a statistically significant         recommended for increasing smoking
    increase in smoking cessation rate (OR 1.38;      cessation rates.
    95% CI 1.05-1.81).                           •    These findings must be re-evaluated as
                                                      more rigorous evidence emerges.
Overall Considerations
                 Considerations for Public Health Practice
  Conclusions from Health Evidence                              General Implications
School-based interventions led to:                   The most current, rigorous evidence does not
• no effects on physical activity, nutrition, BMI,   support school-based interventions to reduce
   fruit and vegetable intake, energy from fat,      Type II diabetes or its risk factors. Findings from
   total serum cholesterol, and VO2 Max              less rigorous studies do support the use of
   (rigorous studies)                                school-based interventions.
• improvements in triglycerides, physical
   activity, systolic and diastolic blood            Community-based interventions are currently
   pressure, percentage body fat, smaller            recommended for increasing physical activity.
   increase in BMI, and waist circumference
   among boys                                        Worksite-based interventions are suggested for
                                                     increasing smoking cessation rates.
Community-based interventions led to:
• increase in self-reported physical activity        There is limited, good quality evidence. Results
                                                     should be applied cautiously to public health
Worksite-based interventions led to:                 practice, and any associated public health
• increase in smoking cessation rates                programs need to evaluate the impact of these
                                                     interventions.
Questions?
Summary Statement:
O’Brien (2010)
Overall Considerations
                 Considerations for Public Health Practice
 Conclusions from Health Evidence                            General Implications
Immunologic/virologic                              The overall findings suggest that:
• significant impact on CD4 count (interval        • the promotion of aerobic exercise, while
   aerobic exercisers)                                  resulting in improvements for a small
• no impact: CD4 count, CD4%, and viral                 number of outcomes, does not positively
   load (all other types of exercise)                   impact most outcomes, and may not be an
Cardiopulmonary                                         effective public health strategy for this
• improvement in VO2 Max                                population.
• no impact: max. heart rate or exercise time      • various formats of aerobic exercise did not
Strength                                                positively and significantly impact
• improvements in strength (exercisers)                 immunologic/virologic outcomes, most
Weight and Body composition                             cardiopulmonary outcomes, and strength
• decrease in body fat (aerobic exercisers)             measures
• increased change in leg muscle (aerobic          • given improvements on VO2 Max, percent
   exercise plus progressive resistive training)        body fat, and depression in HIV patients,
• no change in body weight, BMI, waist or hip           promotion of exercise may be supported
   circumference, waist-to-hip ratio, fat mass     If implemented, the impact of aerobic exercise
Psychological                                      promotion on this population should be
• improvement in depression-dejection              evaluated within the local context.
Interpreting the Evidence
Immunologic/Virologic Outcomes (14 RCTs)
          What’s the evidence?                       Implications for practice & policy
•   A statistically significant impact on CD4    •   Generally the evidence does not support
    count was observed in the interval aerobic       public health allocating resources to
    group compared to non-exercisers (69.58          promote aerobic exercise among HIV
    cell/mm3, 95% CI, 14.08 – 125.09, P=0.01) (2     populations for the purpose of improving
    studies).                                        CD4 count, CD4%, or viral load.
•   No impact on change in CD4 count, CD4%,
    and viral load for all other combinations of
    exercise versus no exercise.
Interpreting the Evidence
Cardiopulmonary (14 RCTs)
          What’s the evidence?                        Implications for practice & policy
•   A statistically significant improvement in    •   Exercise promotion is supported as a public
    VO2 Max was observed among aerobic                health intervention among HIV populations
    exercisers vs. non-exercisers (2.63               if improvements in VO2 Max are of greatest
    Ml/kg/min, 95% CI, 1.19 – 4.07); constant         interest.
    aerobic exercisers vs. non-exercisers (2.40   •   However, improvements in maximum heart
    Ml/kg/min, 95% CI 0.82-3.99); heavy               rate and exercise time should not be
    intensity vs. moderate intensity (4.30            expected.
    Ml/kg/min, 95% CI 0.67 – 7.98).
•   No impact on maximum heart rate or
    exercise time.
Interpreting the Evidence
Strength (6 RCTs)
          What’s the evidence?                      Implications for practice & policy
•   Meta-analysis not conducted due to          •   While meta-analysis was not possible, the
    variation in strength measures. 5 of 6          evidence suggests that exercise promotion
    individual studies reported statistically       is supported to achieve improved strength
    significant improvements in strength            among HIV populations.
    measures between exercisers and non-
    exercisers.
Interpreting the Evidence
Weight and Body Composition (9 RCTs)
          What’s the evidence?                        Implications for practice & policy
•   Statistically significant decrease in percent •   While the majority of outcomes related to
    body fat (-1.12%, 95% CI -2.18 to -0.07),         weight and body composition were not
    increase in change in leg muscle area             impacted by aerobic exercise, improvement
    (4.79cm2, 95% CI 2.04 to 7.54).                   in percent body fat suggests promotion of
•   No impact on change in mean body weight,          aerobic exercise among HIV populations
    waist circumference, hip circumference,           may be an important public health strategy.
    waist-to-hip ratio, change in body mass
    index, change in fat mass.
Interpreting the Evidence
Psychological (9 RCTs)
          What’s the evidence?                         Implications for practice & policy
•   Statistically significant improvement in       •   The evidence suggests the promotion of
    depression-dejection scale in exercisers vs.       aerobic exercise among HIV populations for
    non-exercisers (7.68, 95% CI -13.47 to             improving depression-dejection measure.
    -1.90).
Overall Considerations
                 Considerations for Public Health Practice
 Conclusions from Health Evidence                            General Implications
Immunologic/virologic                              The overall findings suggest that:
• significant impact on CD4 count (interval        • the promotion of aerobic exercise, while
   aerobic exercisers)                                  resulting in improvements for a small
• no impact: CD4 count, CD4%, and viral                 number of outcomes, does not positively
   load (all other types of exercise)                   impact most outcomes, and may not be an
Cardiopulmonary                                         effective public health strategy for this
• improvement in VO2 Max                                population.
• no impact: max. heart rate or exercise time      • various formats of aerobic exercise did not
Strength                                                positively and significantly impact
• improvements in strength (exercisers)                 immunologic/virologic outcomes, most
Weight and Body composition                             cardiopulmonary outcomes, and strength
• decrease in body fat (aerobic exercisers)             measures
• increased change in leg muscle (aerobic          • given improvements on VO2 Max, percent
   exercise plus progressive resistive training)        body fat, and depression in HIV patients,
• no change in body weight, BMI, waist or hip           promotion of exercise may be supported
   circumference, waist-to-hip ratio, fat mass     If implemented, the impact of aerobic exercise
Psychological                                      promotion on this population should be
• improvement in depression-dejection              evaluated within the local context.
Questions?
Summary Statement:
Farmer(2008)
Overall Considerations
                 Considerations for Public Health Practice
    Conclusions from Health Evidence                             General Implications
Printed educational materials (PEMs) compared to         Currently available evidence does not
no intervention led to:                                  support the use of PEMs by public health as
• small negative change in patient outcomes, with        a means to improve both professional
    the effects being of limited clinical significance   practice and patient outcomes.
• no improvement in professional practice
    outcomes                                             Decision makers may consider including
 a single intervention (e.g. educational                 PEMs as part of a multi-faceted
workshops or outreach) resulted in:                      intervention, although this will require
• a small change in some professional practice and       rigorous evaluation.
    patient outcomes
• non-significant changes in continuous outcomes  Although there is currently insufficient
                                                  evidence related to the circumstances and
No studies were found comparing PEMs as part of a contexts in which PEMs work best, future
multifaceted intervention to other multifaceted   projects re-explore this literature in
interventions.                                    planning PEM campaigns.

Unable to determine specific circumstances and
contexts in which PEMs are most effective.
Interpreting the Evidence
PEMs compared to no intervention (4 cluster randomized
trials, 3 RCTs, 10 interrupted time series (ITS) studies)
          What’s the evidence?                         Implications for practice & policy
•   Small deterioration of patient outcomes across •    Public health decision makers should not
    3 studies (median standard ES -0.004 to -           consider PEMs to improve professional
    0.20), with uncertain clinical significance.        practice.
•   No impact on professional practice outcomes    •    Given the impact of PEMs on patient
    for categorical process outcomes (e.g. x-ray        outcomes was minimal at best, PEMs may
    requests, prescribing and smoking cessation         not be an optimal use of public health
    activities) and continuous process outcomes         resources.
    (e.g. medication change, x-rays requests per
    practice).
Interpreting the Evidence
PEMs as one component of any intervention compared to a
single intervention (1 RCT)
          What’s the evidence?                        Implications for practice & policy
•   A single RCT showed a small positive impact •      When using PEMs as one component of a
    on professional practice outcomes (median          larger intervention, public health decision
    absolute risk difference 0.5 in favour of          makers should not invest heavily in PEMs
    PEMs), with the 2 other trials reporting non-      to improve professional practice OR
    significant effects.                               patient outcomes. However, the
•   A single RCT showed a small positive impact        currently-available evidence is limited.
    on categorical patient outcomes for smoking
    cessation (median standardized effect -0.2%).
•   No impact on continuous patient outcomes
    (e.g. screening, return to work, quit smoking).
Overall Considerations
                 Considerations for Public Health Practice
    Conclusions from Health Evidence                             General Implications
Printed educational materials (PEMs) compared to         Currently available evidence does not
no intervention led to:                                  support the use of PEMs by public health as
• small negative change in patient outcomes, with        a means to improve both professional
    the effects being of limited clinical significance   practice and patient outcomes.
• no improvement in professional practice
    outcomes                                             Decision makers may consider including
 a single intervention (e.g. educational                 PEMs as part of a multi-faceted
workshops or outreach) resulted in:                      intervention, although this will require
• a small change in some professional practice and       rigorous evaluation.
    patient outcomes
• non-significant changes in continuous outcomes  Although there is currently insufficient
                                                  evidence related to the circumstances and
No studies were found comparing PEMs as part of a contexts in which PEMs work best, future
multifaceted intervention to other multifaceted   projects re-explore this literature in
interventions.                                    planning PEM campaigns.

Unable to determine specific circumstances and
contexts in which PEMs are most effective.
Questions?
Discussion Forum
Please continue to discuss this topic and other
        topics on our discussion forum.
       www.health-evidence.ca/forum/
Login with your health-evidence username and password or
             register if you aren’t a member yet.

Join us for a LIVE on Monday, February 27 at 1:00 pm
   EST to have your questions answered in real time!
Evaluation
  Please check your email for the evaluation
       link. It take 5 minutes to complete!
If you’ve been watching with someone else and did
    not personally register for the webinar, please
              e-mail Jennifer McGugan at
     mcgugj@mcmaster.ca to be sent the survey.

          Thank you for your participation!

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Chronic Disease Program Planning in Public Health: What's the Evidence

  • 1. This webinar has been made possible with support from the Canadian Institutes of Health Research Welcome! Chronic Disease Program Planning: Discussing Review- Level Evidence You will be placed on hold until the webinar begins. The webinar will begin shortly, please remain on the line.
  • 2. What’s the evidence?  Booth, M., O’Brodovich, H., Finegood, D. (2004). Addressing childhood obesity: The evidence for action. Ottawa, ON: Canadian Institutes of Health Research, Institute of Nutrition, Metabolism and Diabetes.  Shiell, A., Spilchak, P., Ladhani, N., Hawe, P., Lorenzetti, D. (2008). A systematic review of population health approaches to prevent type II diabetes: Report to the Public Health Agency of Canada. Calgary, AB: Population Health Intervention Research Centre (PHIRC).  O’Brien, K., Nixon, S., Tynan, A.M., Glazier, R.H. (2010). Aerobic exercise interventions for adults living with HIV/AIDS. Cochrane Database of Systematic Reviews, Issue 8, Art. No.: CD001796.  Farmer, A.P., Legare, F., Grimshaw, J., Harvey, E., McGowan, J.L., et al. (2008). Printed educational materials: Effects on professional practice and health care outcomes. Cochrane Database of Systematic Reviews, Issue 3, Art. No.: CD004398.
  • 3. Housekeeping  Connection issues  Recommend you use a wired Internet connection rather than wireless, to help prevent connection challenges  Please contact the WebEx 24/7 help line: 1-866-229-3239
  • 4. Side Panel in WebEx Housekeeping Feedback icon  How to post comments/questions Hand icon during the webinar Mic request  To write in CHAT or Q&A • Address questions to all Chat panelists • Raise hand using the ‘hand’ icon (indicated on the right) • Respond to general comments using the feedback icon Q&A  To talk: • If have a head set, you can ask to be passed the mic (mic request icon on right)
  • 5. This webinar has been made possible with support from the Canadian Institutes of Health Research Welcome! Chronic Disease Program Planning: Discussing Review- Level Evidence You will be placed on hold until the webinar begins. The webinar will begin shortly, please remain on the line.
  • 6. The Health Evidence Team Maureen Dobbins Kara DeCorby Daiva Tirilis Scientific Director Administrative Director Research Coordinator Tel: 905 525-9140 ext 22481 Tel: (905) 525-9140 ext. 20461 Tel: (905) 525-9140 ext. 20460 E-mail: dobbinsm@mcmaster.ca E-mail: kdecorby@health-evidence.ca E-mail: dtirilis@health-evidence.ca Lori Greco Heather Husson Robyn Traynor Lyndsey McRae Knowledge Broker Project Manager Research Coordinator Research Assistant
  • 7. What is www.health-evidence.ca? Evidence inform Decision Making
  • 8. Why use www.health-evidence.ca? 1. Saves you time 2. Relevant & current evidence 3. Transparent process 4. Supports for EIDM available 5. Easy to use
  • 9. Meetings, Planning & Dissemination Project CIHR Funded MOP-238541
  • 10. CIHR-Funded Reviews  Booth, M., O’Brodovich, H., Finegood, D. (2004). Addressing childhood obesity: The evidence for action. Ottawa, ON: Canadian Institutes of Health Research, Institute of Nutrition, Metabolism and Diabetes.  Shiell, A., Spilchak, P., Ladhani, N., Hawe, P., Lorenzetti, D. (2008). A systematic review of population health approaches to prevent type II diabetes: Report to the Public Health Agency of Canada. Calgary, AB: Population Health Intervention Research Centre (PHIRC).  O’Brien, K., Nixon, S., Tynan, A.M., Glazier, R.H. (2010). Aerobic exercise interventions for adults living with HIV/AIDS. Cochrane Database of Systematic Reviews, Issue 8, Art. No.: CD001796.  Farmer, A.P., Legare, F., Grimshaw, J., Harvey, E., McGowan, J.L., et al. (2008). Printed educational materials: Effects on professional practice and health care outcomes. Cochrane Database of Systematic Reviews, Issue 3, Art. No.: CD004398.
  • 11. Evaluation Please check your email for the evaluation survey link after the webinar. It take 5 minutes to complete! If you’ve been watching with someone else and did not personally register for the webinar, please e-mail Jennifer McGugan at mcgugj@mcmaster.ca to be sent the survey.
  • 14. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications Interventions that showed improvement in Public health should support: obesity outcomes promoted: • programs that focus on diet + exercise • consumption of a healthier diet plus • physical activity behavior change and dietary exercise (vs. diet only) change interventions for school children • increased physical activity in and out-of- • behavior modification with both diet and school physical activity strategies • healthier diet among school-aged children • behaviour modification strategies alongside Due to a current lack of evidence, public health strategies to improve diet and physical programs should not include: activity • a focus on specific elements of dietary interventions Evidence is not conclusive enough to support: • dietary interventions for pre-school aged • dietary interventions children or minorities • dietary change interventions for preschool- • reinforcement after obesity treatment aged children or minorities • a focus on modifying factors including age, • reinforcement after obesity treatment setting, duration, or initial weight, as a way • modifying factors (age, duration, etc.) to modify obesity outcomes
  • 15. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications No impact on obesity outcomes were Due to a lack of effectiveness, public health observed for interventions on: should also avoid focus on: • dietary change • cardiovascular risk factor interventions to • cardiovascular risk factor reduction modify obesity outcomes • primary prevention programs for obesity • primary prevention programs for obesity • lifestyle exercise strategies • lifestyle exercise programs • parental involvement No current evidence to inform how public No review-level evidence was identified to health should address obesity treatment in address treatment of obesity in minority minority groups, and programs for these groups groups. should be evaluated and evaluations shared.
  • 16. Interpreting the Evidence Prevention of obesity (6 SR including 34 studies + 6 narrative reviews; mostly low to moderate quality) What’s the evidence? Implications for practice & policy No impact of obesity OR cardiovascular • Public health decision makers should not prevention interventions on adiposity rely on either obesity prevention or • Systematic review evidence (4 reviews for cardiovascular prevention programs for which citation analysis was possible): does decreasing adiposity, given the current not support obesity prevention programs evidence from both systematic and (i.e. several school-based) for the reduction narrative reviews. of adiposity. (7/26 studies identified a reduction in adiposity) • Systematic review evidence (1 review – 16 studies): Cardiovascular prevention programs were not effective in decreasing adiposity (7/77 showed a positive impact). • Narrative review evidence (6 reviews): insufficient evidence for obesity prevention as an adiposity reduction measure.
  • 17. Interpreting the Evidence Diet vs. Diet and Exercise (5 reviews) What’s the evidence? Implications for practice & policy • Exercise programs combined with a dietary • Public Health decision makers should intervention offered some improvement in promote diet and exercise together (as adiposity (6 of 10 studies); however the opposed to diet alone) for the secondary extent to which benefits are sustained in prevention of obesity, and evaluate whether long term is unclear) long-term benefits are realized.
  • 18. Interpreting the Evidence Dietary Interventions (1 meta-analysis (17 studies) + 1 review of a single study) What’s the evidence? Implications for practice & policy • No impact of specific elements of dietary • Based on two SRs of fair quality, there is interventions on weight loss. insufficient evidence to recommend any specific elements of dietary interventions for obesity reduction.
  • 19. Interpreting the Evidence Physical Activity (PA) Behaviour Change (8 reviews) What’s the evidence? Implications for practice & policy • PA during school hours – high quality • Public health should promote PA behaviour review evidence (4 reviews) shows that change interventions to increase PA during school-based interventions are effective in school hours. Programs should be evaluated increasing PA during school hours. to determine whether PA outside school • PA outside school hours – there is some hours is increased. (mixed) evidence that school-based • Evaluations conducted by public health interventions increase PA outside school should ideally include long-term follow up hours. into adulthood.
  • 20. Interpreting the Evidence Strategies to promote dietary change (7 SR + 5 narrative reviews; analysis according to behaviour change model) What’s the evidence? Implications for practice & policy • Preschool children: 7/10 studies in 2 SRs • Public health should not rely on either offer mixed evidence that does not behavioural or knowledge-based conclusively support specific behavioural or approaches to improve preschool children’s knowledge-based strategies to change food- dietary behaviour. related behaviour (e.g. touch/smell/taste • Public health should use and evaluate new foods, modeling, repeated exposures) behaviourally-based approaches to improve • School-based: 42/59 studies in 6 reviews dietary behaviour in school-based programs. showed some improvement in dietary • Public health should evaluate efforts to behaviour that was more closely attributed improve dietary behaviour in minority to behaviourally-based approaches rather populations in order to contribute to the than knowledge-based approaches. evidence base available. Descriptions of strategies are not provided. • Minority Populations: 1 low-quality review offered no definitive conclusions that dietary interventions are effective.
  • 21. Interpreting the Evidence Strategies Lifestyle Exercise Strategies (3 reviews citing the same 3 studies + 1 meta-analysis) What’s the evidence? Implications for practice & policy • Lifestyle exercise was distinct from other • Public Health decision makers should not exercise programs in that it (1) includes rely on lifestyle exercise to decrease activities of daily living, (2) includes caloric childhood obesity. However, public health expenditure in small increments throughout should consider other possible benefits to the day, and (3) no prescribed intensity. be derived from the promotion of lifestyle • No impact on childhood obesity compared exercise. to either no exercise or other exercise, based on the meta-analysis incorporating the widest range of evidence.
  • 22. Interpreting the Evidence Parental Involvement (4 reviews (13 studies) + 1 meta-analysis) What’s the evidence? Implications for practice & policy • Parental involvement interventions varied, • Public health should not focus on parental with only one study directed solely at involvement strategies as a way to improve parents. A range of interventions were childhood obesity treatment. aimed at both children and parents to varying degrees. Intervention elements are not well described; but tend to be family- oriented and include homework assignments, and parents motivating their children. • No impact on childhood obesity treatment, even though there is good evidence in this topic area
  • 23. Interpreting the Evidence Behaviour Modification Strategies (2 reviews of 9 studies + 1 meta-analysis) What’s the evidence? Implications for practice & policy • Little information provided regarding the • Behaviour modification strategies should be nature of behaviour modification strategies considered for use with dietary and physical used. activity interventions, and ideally with all • Improvement in obesity status when three strategies combined, in aiming to behaviour modification strategies were used improve obesity status. with dietary and physical activity strategies • Public health should not focus on self- in the short-term. Behaviour modification, control training as an additional strategy for dietary AND physical activity strategies reducing obesity in children. together demonstrated greater treatment effect than behaviour modification and either dietary or PA. • No impact of additional or “add-on” self- control training on obesity status.
  • 24. Interpreting the Evidence Reinforcement (1 review) What’s the evidence? Implications for practice & policy • A single, small (15 subjects) study of fair • There is limited evidence at this time to quality in one review showed that periodic support the provision of reinforcement reinforcement after obesity treatment following obesity treatment programs enhanced weight loss
  • 25. Interpreting the Evidence Factors Influencing Obesity Prevention What’s the evidence? Implications for practice & policy • There is a very limited evidence examining • Based on evidence available at this time, the effect of setting, duration of treatment public health should not focus on modifying and initial weight status upon which to factors such as: setting, duration of assess the impact on obesity outcomes. treatment, age, and initial weight status to improve obesity outcomes. It is possible that relationships between these factors and obesity may exist; however, they are unclear at this time.
  • 26. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications Interventions that showed improvement in Public health should support: obesity outcomes promoted: • programs that focus on diet + exercise • consumption of a healthier diet plus • physical activity behavior change and dietary exercise (vs. diet only) change interventions for school children • increased physical activity in and out-of- • behavior modification with both diet and school physical activity strategies • healthier diet among school-aged children • behaviour modification strategies alongside Due to a current lack of evidence, public health strategies to improve diet and physical programs should not include: activity • a focus on specific elements of dietary interventions Evidence is not conclusive enough to support: • dietary interventions for pre-school aged • dietary interventions children or minorities • dietary change interventions for preschool- • reinforcement after obesity treatment aged children or minorities • a focus on modifying factors including age, • reinforcement after obesity treatment setting, duration, or initial weight, as a way • modifying factors (age, duration, etc.) to modify obesity outcomes
  • 27. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications No impact on obesity outcomes were Due to a lack of effectiveness, public health observed for interventions on: should also avoid focus on: • dietary change • cardiovascular risk factor interventions to • cardiovascular risk factor reduction modify obesity outcomes • primary prevention programs for obesity • primary prevention programs for obesity • lifestyle exercise strategies • lifestyle exercise programs • parental involvement No current evidence to inform how public No review-level evidence was identified to health should address obesity treatment in address treatment of obesity in minority minority groups, and programs for these groups groups. should be evaluated and evaluations shared.
  • 30. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications School-based interventions led to: The most current, rigorous evidence does not • no effects on physical activity, nutrition, BMI, support school-based interventions to reduce fruit and vegetable intake, energy from fat, Type II diabetes or its risk factors. Findings from total serum cholesterol, and VO2 Max less rigorous studies do support the use of (rigorous studies) school-based interventions. • improvements in triglycerides, physical activity, systolic and diastolic blood Community-based interventions are currently pressure, percentage body fat, smaller recommended for increasing physical activity. increase in BMI, and waist circumference among boys Worksite-based interventions are suggested for increasing smoking cessation rates. Community-based interventions led to: • increase in self-reported physical activity There is limited, good quality evidence. Results should be applied cautiously to public health Worksite-based interventions led to: practice, and any associated public health • increase in smoking cessation rates programs need to evaluate the impact of these interventions.
  • 31. Interpreting the Evidence School-based interventions (5 RCTs of high quality, 6 quasi- experimental of moderate quality) What’s the evidence? Implications for practice & policy Among studies of moderate methodological • Given evidence is mixed (rigorous studies quality, a statistically significant impact was generally report no effect, lower quality observed on: studies report significant effects), school- • Triglycerides, blood pressure, percentage based interventions may not be an effective body fat, participation in rigorous physical public health strategy for reducing Type II activity, waist circumference, and(less of an diabetes and its risk factors. increase in BMI compared to usual care. • Given some interventions affect boys and • Some effects observed among girls only and girls differently, careful consideration of the others among boys only. different facilitators and barriers to physical activity among boys and girls is needed, if Among the most rigorous studies: these interventions are implemented. • No impact on physical activity, diet, total serum cholesterol,VO2 Max, or BMI.
  • 32. Interpreting the Evidence Community-based interventions (1 study; moderate quality) What’s the evidence? Implications for practice & policy • One studies of moderate methodological • Community-based interventions are quality, statistically significant impact was supported for increasing physical activity. observed on self-reported physical activity. Results should be interpreted cautiously as physical activity was measured through self- report, which may overestimate the true treatment effect. • These findings must be re-evaluated as more rigorous evidence emerges.
  • 33. Interpreting the Evidence Worksite-based interventions (1 study; moderate quality) What’s the evidence? Implications for practice & policy • One study of moderate methodological • Worksite-based interventions are quality found a statistically significant recommended for increasing smoking increase in smoking cessation rate (OR 1.38; cessation rates. 95% CI 1.05-1.81). • These findings must be re-evaluated as more rigorous evidence emerges.
  • 34. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications School-based interventions led to: The most current, rigorous evidence does not • no effects on physical activity, nutrition, BMI, support school-based interventions to reduce fruit and vegetable intake, energy from fat, Type II diabetes or its risk factors. Findings from total serum cholesterol, and VO2 Max less rigorous studies do support the use of (rigorous studies) school-based interventions. • improvements in triglycerides, physical activity, systolic and diastolic blood Community-based interventions are currently pressure, percentage body fat, smaller recommended for increasing physical activity. increase in BMI, and waist circumference among boys Worksite-based interventions are suggested for increasing smoking cessation rates. Community-based interventions led to: • increase in self-reported physical activity There is limited, good quality evidence. Results should be applied cautiously to public health Worksite-based interventions led to: practice, and any associated public health • increase in smoking cessation rates programs need to evaluate the impact of these interventions.
  • 37. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications Immunologic/virologic The overall findings suggest that: • significant impact on CD4 count (interval • the promotion of aerobic exercise, while aerobic exercisers) resulting in improvements for a small • no impact: CD4 count, CD4%, and viral number of outcomes, does not positively load (all other types of exercise) impact most outcomes, and may not be an Cardiopulmonary effective public health strategy for this • improvement in VO2 Max population. • no impact: max. heart rate or exercise time • various formats of aerobic exercise did not Strength positively and significantly impact • improvements in strength (exercisers) immunologic/virologic outcomes, most Weight and Body composition cardiopulmonary outcomes, and strength • decrease in body fat (aerobic exercisers) measures • increased change in leg muscle (aerobic • given improvements on VO2 Max, percent exercise plus progressive resistive training) body fat, and depression in HIV patients, • no change in body weight, BMI, waist or hip promotion of exercise may be supported circumference, waist-to-hip ratio, fat mass If implemented, the impact of aerobic exercise Psychological promotion on this population should be • improvement in depression-dejection evaluated within the local context.
  • 38. Interpreting the Evidence Immunologic/Virologic Outcomes (14 RCTs) What’s the evidence? Implications for practice & policy • A statistically significant impact on CD4 • Generally the evidence does not support count was observed in the interval aerobic public health allocating resources to group compared to non-exercisers (69.58 promote aerobic exercise among HIV cell/mm3, 95% CI, 14.08 – 125.09, P=0.01) (2 populations for the purpose of improving studies). CD4 count, CD4%, or viral load. • No impact on change in CD4 count, CD4%, and viral load for all other combinations of exercise versus no exercise.
  • 39. Interpreting the Evidence Cardiopulmonary (14 RCTs) What’s the evidence? Implications for practice & policy • A statistically significant improvement in • Exercise promotion is supported as a public VO2 Max was observed among aerobic health intervention among HIV populations exercisers vs. non-exercisers (2.63 if improvements in VO2 Max are of greatest Ml/kg/min, 95% CI, 1.19 – 4.07); constant interest. aerobic exercisers vs. non-exercisers (2.40 • However, improvements in maximum heart Ml/kg/min, 95% CI 0.82-3.99); heavy rate and exercise time should not be intensity vs. moderate intensity (4.30 expected. Ml/kg/min, 95% CI 0.67 – 7.98). • No impact on maximum heart rate or exercise time.
  • 40. Interpreting the Evidence Strength (6 RCTs) What’s the evidence? Implications for practice & policy • Meta-analysis not conducted due to • While meta-analysis was not possible, the variation in strength measures. 5 of 6 evidence suggests that exercise promotion individual studies reported statistically is supported to achieve improved strength significant improvements in strength among HIV populations. measures between exercisers and non- exercisers.
  • 41. Interpreting the Evidence Weight and Body Composition (9 RCTs) What’s the evidence? Implications for practice & policy • Statistically significant decrease in percent • While the majority of outcomes related to body fat (-1.12%, 95% CI -2.18 to -0.07), weight and body composition were not increase in change in leg muscle area impacted by aerobic exercise, improvement (4.79cm2, 95% CI 2.04 to 7.54). in percent body fat suggests promotion of • No impact on change in mean body weight, aerobic exercise among HIV populations waist circumference, hip circumference, may be an important public health strategy. waist-to-hip ratio, change in body mass index, change in fat mass.
  • 42. Interpreting the Evidence Psychological (9 RCTs) What’s the evidence? Implications for practice & policy • Statistically significant improvement in • The evidence suggests the promotion of depression-dejection scale in exercisers vs. aerobic exercise among HIV populations for non-exercisers (7.68, 95% CI -13.47 to improving depression-dejection measure. -1.90).
  • 43. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications Immunologic/virologic The overall findings suggest that: • significant impact on CD4 count (interval • the promotion of aerobic exercise, while aerobic exercisers) resulting in improvements for a small • no impact: CD4 count, CD4%, and viral number of outcomes, does not positively load (all other types of exercise) impact most outcomes, and may not be an Cardiopulmonary effective public health strategy for this • improvement in VO2 Max population. • no impact: max. heart rate or exercise time • various formats of aerobic exercise did not Strength positively and significantly impact • improvements in strength (exercisers) immunologic/virologic outcomes, most Weight and Body composition cardiopulmonary outcomes, and strength • decrease in body fat (aerobic exercisers) measures • increased change in leg muscle (aerobic • given improvements on VO2 Max, percent exercise plus progressive resistive training) body fat, and depression in HIV patients, • no change in body weight, BMI, waist or hip promotion of exercise may be supported circumference, waist-to-hip ratio, fat mass If implemented, the impact of aerobic exercise Psychological promotion on this population should be • improvement in depression-dejection evaluated within the local context.
  • 46. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications Printed educational materials (PEMs) compared to Currently available evidence does not no intervention led to: support the use of PEMs by public health as • small negative change in patient outcomes, with a means to improve both professional the effects being of limited clinical significance practice and patient outcomes. • no improvement in professional practice outcomes Decision makers may consider including a single intervention (e.g. educational PEMs as part of a multi-faceted workshops or outreach) resulted in: intervention, although this will require • a small change in some professional practice and rigorous evaluation. patient outcomes • non-significant changes in continuous outcomes Although there is currently insufficient evidence related to the circumstances and No studies were found comparing PEMs as part of a contexts in which PEMs work best, future multifaceted intervention to other multifaceted projects re-explore this literature in interventions. planning PEM campaigns. Unable to determine specific circumstances and contexts in which PEMs are most effective.
  • 47. Interpreting the Evidence PEMs compared to no intervention (4 cluster randomized trials, 3 RCTs, 10 interrupted time series (ITS) studies) What’s the evidence? Implications for practice & policy • Small deterioration of patient outcomes across • Public health decision makers should not 3 studies (median standard ES -0.004 to - consider PEMs to improve professional 0.20), with uncertain clinical significance. practice. • No impact on professional practice outcomes • Given the impact of PEMs on patient for categorical process outcomes (e.g. x-ray outcomes was minimal at best, PEMs may requests, prescribing and smoking cessation not be an optimal use of public health activities) and continuous process outcomes resources. (e.g. medication change, x-rays requests per practice).
  • 48. Interpreting the Evidence PEMs as one component of any intervention compared to a single intervention (1 RCT) What’s the evidence? Implications for practice & policy • A single RCT showed a small positive impact • When using PEMs as one component of a on professional practice outcomes (median larger intervention, public health decision absolute risk difference 0.5 in favour of makers should not invest heavily in PEMs PEMs), with the 2 other trials reporting non- to improve professional practice OR significant effects. patient outcomes. However, the • A single RCT showed a small positive impact currently-available evidence is limited. on categorical patient outcomes for smoking cessation (median standardized effect -0.2%). • No impact on continuous patient outcomes (e.g. screening, return to work, quit smoking).
  • 49. Overall Considerations Considerations for Public Health Practice Conclusions from Health Evidence General Implications Printed educational materials (PEMs) compared to Currently available evidence does not no intervention led to: support the use of PEMs by public health as • small negative change in patient outcomes, with a means to improve both professional the effects being of limited clinical significance practice and patient outcomes. • no improvement in professional practice outcomes Decision makers may consider including a single intervention (e.g. educational PEMs as part of a multi-faceted workshops or outreach) resulted in: intervention, although this will require • a small change in some professional practice and rigorous evaluation. patient outcomes • non-significant changes in continuous outcomes Although there is currently insufficient evidence related to the circumstances and No studies were found comparing PEMs as part of a contexts in which PEMs work best, future multifaceted intervention to other multifaceted projects re-explore this literature in interventions. planning PEM campaigns. Unable to determine specific circumstances and contexts in which PEMs are most effective.
  • 51. Discussion Forum Please continue to discuss this topic and other topics on our discussion forum. www.health-evidence.ca/forum/ Login with your health-evidence username and password or register if you aren’t a member yet. Join us for a LIVE on Monday, February 27 at 1:00 pm EST to have your questions answered in real time!
  • 52. Evaluation Please check your email for the evaluation link. It take 5 minutes to complete! If you’ve been watching with someone else and did not personally register for the webinar, please e-mail Jennifer McGugan at mcgugj@mcmaster.ca to be sent the survey. Thank you for your participation!

Editor's Notes

  1. Just a reminder, we will be discussing the following 4 reviews todayThe abstracts and the links to the freely-accessible review are available on the Health Evidence website. A summary statement will be made available for each review on the Health Evidence website in the next few days.
  2. CHAT or Q&A Address questions to all panelistsEither post text in the CHAT or Q&A on the right side panelRaise your hand on the participant side panel by selecting the hand icon; lower your hand by selecting the hand icon again Non-verbal way to communicate with us is to use the feedback button. The feedback icon opens a dialogue box with several respond options such as ‘yes’, ‘no’, too fast, too slow, and provides us with a tally of answers submittedMicIf you have a head set, you can be asked to be passed the mic and we will unmute your mic to allow one person to speak at a time
  3. Good afternoon. Thank you for joining us in the Chronic Disease webinar, which is the last one in a series of webinars. In order to interact and communicate with us, please use the chat and Q&A windows on the right side panel.You can also use the feedback icon (the check mark in the circle in the participants panel on the right) to respond to general questions. Please use icon to let us know if you can hear me ok?Also, we will be conducting polls throughout the webinar .POLL 1: What are you from?BCABSKMBONQCNBNSPENFNUNTYK USASouth AmericaEuropeAfricaAsiaOceania
  4. Introduce teamPOLL 2: Have you heard of Health Evidence before?YesNo
  5. While we know some of you are aware of Health Evidence, we are going to take a couple of minutes to go over what health evidence is.So, what is health-evidence? It’s a online registry that you search for evidence to inform your decision making. Brief history of development of website/registry started in response to Canadian public health decision makers identifying they wanted to be able to go to one place to find evidence on effectivenessBrief outline of what a SR is A systematic review compiles on one place all the research evidence that addresses a practice- or policy-based question
  6. Saves you timeaddresses 2 major barriers identified by public health and health promotion decision-makers: Difficulty identifying PH literature in large medical databases –looking for needle in haystackOnly have to go to one placeEach review assessed for methodological quality and rating providedRelevant & current evidenceScreened for relevance to PH & HPUpdated quarterlyComprehensive search strategy electronic search of 7 online databases: MEDLINE, EMBASE, CINAHL, PsycINFO, Sociological Abstracts and BIOSIS, SPORTDiscushandsearching of 20 public health and health promotion journal titles reference list searches of all relevant reviewsTransparent ProcessProcess by which reviews are added to health-evidence is transparent with all tools and guides for using these tools available on the siteEach review is assessed for relevance, methodologicalquality, keyworded, and summarized into key findings and implications for policy and practice:4. Supports for EIDM availableWe know that access to evidence in only part of the challenge. Public Health decision makers have told us they also want guidance and support in interpreting and applying the evidence in their local context ‘Contact Us’ link – 2 Knowledge Brokers to assist you in your searches – response within 1 business dayEIDM tools to support public health program decision making5. Easy to useEasy to search – search terms are commonly used PH and PH terms
  7. The webinar today has been made possible through a CIHR grant.Based on the grant, we have a diverse set of reviews which are all CIHR-funded reviews.If you are looking for other evidence, or more current evidence, we would suggest you search the Health Evidence website.
  8. Just a reminder, we will be discussing the following 4 reviews today onThe abstracts and the links to the freely-accessible review are available on the Health Evidence website. A summary statement will be made available for each review on the Health Evidence website in the next few days.
  9. Mention up front that there’s an evaluation since we have a diverse set of reviews and everyone might not stay for whole session.Just wanted to thank everyone for their participation today. After the webinar today, please check your email for the evaluation -- it will take about 5 minutes to complete. .We’re hoping that you will provide us with feedback on today’s session, which we’ll use to help guide development of future webinars.
  10. POLL3:Who has heard of PICO before?O YesO NoWe are now looking at the summary statementSSs are 2-3 pages in length and provide a concise summary of high quality reviews on health-evidence.ca. Page 1 of the SS provides a summary of the review, comments on the review’s methodology, as well as some information on why the issue is relevant to public health.
  11. modifying factors (age, setting, duration, and initial weight)FOR PRINTING: Merged slides 14-17.
  12. modifying factors (age, setting, duration, and initial weight)FOR PRINTING: Merged slides 18-21
  13. Primary Prevention of ObesityFOR PRINTING: Merged slides 22-26
  14. Secondary Prevention/Treatment of Obesity
  15. Secondary Prevention/Treatment of Obesity
  16. Secondary Prevention/Treatment of ObesityFOR PRINTING: Merged slides 29-32
  17. Secondary Prevention/Treatment of ObesityFOR PRINTING: Merged slides 33-38
  18. Secondary Prevention/Treatment of ObesityFOR PRINTING: Merged slides 39-41
  19. Secondary Prevention/Treatment of ObesityFOR PRINTING: Merged slides 42-44
  20. Secondary Prevention/Treatment of ObesityFOR PRINTING: Merged slides 45-49
  21. Secondary Prevention/Treatment of Obesity
  22. Secondary Prevention/Treatment of Obesity
  23. modifying factors (age, setting, duration, and initial weight)
  24. modifying factors (age, setting, duration, and initial weight)
  25. This well done review includes primary studies ranging from strong to weak methodological quality. This summary statement only presents the evidence for strong and moderate studies.The follow-up period for interventions varied between 12 weeks to 6 months to 9 months.FOR PRINTING: Merged slides 56-63
  26. FOR PRINTING: Merged slides 64-67
  27. This well done review includes primary studies ranging from strong to weak methodological quality. This summary statement only presents the evidence for strong and moderate studies.
  28. This high quality review and meta-analysis is based on primary studies of moderate to strong methodological quality. FOR PRINTING: Merged slides 73-81
  29. FOR PRINTING: Merged slides 82-84
  30. FOR PRINTING: Merged slides 85-88
  31. FOR PRINTING: Merged slides 90-92
  32. This high quality review and meta-analysis is based on primary studies of moderate to strong methodological quality.
  33. POLL 5: Did you find the data on these reviews helpful?YesNo POLL6:Were these findings new to you today?Yes No
  34. This is your chance to discuss how the implications can be applied specifically in your local context, or if you would like more practice on interpreting forest plots, discussing methodology, or answer any other questions. We can provide further information about how to use discussion forums if you would like. If you would like to participate in the discussion forum, please provide your contact information in the chat, so we can follow up with you and assist you with log in. This is your chance to try out a discussion forum and connect with others in your field. As well as an opportunity to connect with us at an individual level.
  35. Just before we sign off, we want to thank everyone for their participation today. We’re hoping that you will provide us with feedback on today’s session, which we’ll use to help guide development of future webinars.When you have a minute, please complete our online evaluation survey that has been sent to your email - it will take about 5 minutes to complete. Thanks again and we look forward to your feedback!