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Trauma-related mortality in NB
Dr. James French and Chandy Somayaji
Introduction
 NB Trauma Program and Registry
 Project objectives
 Methods
 Results
 Conclusion
NBTP and NBTR
 NBTP manages the NBTR
 Injury admits from 8 hospitals in the NBTR
 NBTR also has more info on ISS>12 (severely injured
patients); collected from SJRH and TMH
Project objectives
 Determine undercount of mortality in the NBTR compared to
the CIHI DAD
 Determine who dies from injury, how long after discharge do
they die, and primary cause of death
Methods
 Sources of data – CIHI DAD, NBTR, and Vital Statistics (1
year of data from NBTP)
 First obtain number of trauma-related deaths from each
dataset
 Use these to determine mortality rates (per 1000 injured
people)
 Mortality rates determined for deaths that occurred in-hospital,
6 months after discharge, and up to 1 year after discharge
Methods (continued)
 Inclusion criteria (DAD) – At least one external cause of injury
code and one injury code. Eg.: an individual who met with a
bicycle accident and broke their ankle
 Exclusion – poisonings by drugs and gases, adverse effects of
drugs and biological substances
 DAD-only cohort had approx. 7500 individuals (unique
admissions). NBTR had about 2100
Methods (continued)
 Age-groups considered: 0-24, 25-39, 40-64, and 65-84
 Since # of deaths for 0-39 < what NB-IRDTdisclosure rules
allow, those age-groups are excluded here
 Observed death rate compared to expected rate by matching
with 2014 mortality rates for NB
Results
 40-64 year old patients in the DAD-only
Results (continued)
DAD-only NBTR
Results (continued)
DAD-only NBTR
Results (continued)
 For injured patients in the DAD-only cohort, in-hospital deaths
caused by injury was highest for the 85+ age group
 For injured patients in the NBTR, approx. half the patients who
died in-hospital had injury as primary COD
 Heart diseases and neoplasms were the predominant primary
COD for all age-groups after discharge
Conclusions and future work
 Undercount in the NBTR due to fewer injuries captured in the
registry
 Since many 40-85+ year olds died of heart conditions after
discharge, need to investigate why people (particularly 40-64
year olds) are dying and explore how risk factors are being
addressed post-discharge – will likely have policy implications
 More years of data from NBTP will allow for full disclosure and
further analyses
Project team
 Dr. Daniel Dutton
 Susan Benjamin
 Dr. Bryn Robinson
 Ian Watson

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Trauma-related mortality in New Brunswick

  • 1. Trauma-related mortality in NB Dr. James French and Chandy Somayaji
  • 2. Introduction  NB Trauma Program and Registry  Project objectives  Methods  Results  Conclusion
  • 3. NBTP and NBTR  NBTP manages the NBTR  Injury admits from 8 hospitals in the NBTR  NBTR also has more info on ISS>12 (severely injured patients); collected from SJRH and TMH
  • 4. Project objectives  Determine undercount of mortality in the NBTR compared to the CIHI DAD  Determine who dies from injury, how long after discharge do they die, and primary cause of death
  • 5. Methods  Sources of data – CIHI DAD, NBTR, and Vital Statistics (1 year of data from NBTP)  First obtain number of trauma-related deaths from each dataset  Use these to determine mortality rates (per 1000 injured people)  Mortality rates determined for deaths that occurred in-hospital, 6 months after discharge, and up to 1 year after discharge
  • 6. Methods (continued)  Inclusion criteria (DAD) – At least one external cause of injury code and one injury code. Eg.: an individual who met with a bicycle accident and broke their ankle  Exclusion – poisonings by drugs and gases, adverse effects of drugs and biological substances  DAD-only cohort had approx. 7500 individuals (unique admissions). NBTR had about 2100
  • 7. Methods (continued)  Age-groups considered: 0-24, 25-39, 40-64, and 65-84  Since # of deaths for 0-39 < what NB-IRDTdisclosure rules allow, those age-groups are excluded here  Observed death rate compared to expected rate by matching with 2014 mortality rates for NB
  • 8. Results  40-64 year old patients in the DAD-only
  • 11. Results (continued)  For injured patients in the DAD-only cohort, in-hospital deaths caused by injury was highest for the 85+ age group  For injured patients in the NBTR, approx. half the patients who died in-hospital had injury as primary COD  Heart diseases and neoplasms were the predominant primary COD for all age-groups after discharge
  • 12. Conclusions and future work  Undercount in the NBTR due to fewer injuries captured in the registry  Since many 40-85+ year olds died of heart conditions after discharge, need to investigate why people (particularly 40-64 year olds) are dying and explore how risk factors are being addressed post-discharge – will likely have policy implications  More years of data from NBTP will allow for full disclosure and further analyses
  • 13. Project team  Dr. Daniel Dutton  Susan Benjamin  Dr. Bryn Robinson  Ian Watson