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Presentation on Patient Safety Measurement for visitors from Sweden in 2007
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Presentation on Patient Safety Measurement for visitors from Sweden in 2007

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This presentation was put together on the special topic of measurement when a group from Sweden was visiting the Dept of Veterans Affairs National Center for Patient Safety to learn about patient …

This presentation was put together on the special topic of measurement when a group from Sweden was visiting the Dept of Veterans Affairs National Center for Patient Safety to learn about patient safety improvement programs underway there. I remember some of the people listening resisting my main point that so far there was no good way to measure PS outcomes, but some good ways to measure important outcomes that are potential precursors to patient safety problems (like not getting X-rays verified in a timely way).

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  • The Triangle Shirtwaist factory fire is probably the most important event in workplace/occupational safety and fire safety. Many people, mostly women, died in a first when large quantities of cotton caught fire and the workers couldn ’t get out of the building. Well, we ’re never going to get a triangle shirtwaist fire in patient safety – in healthcare people don’t die conspicuously all at once in the same place at the same time – not even with the Vioxx situation we’ve seen recently. Plus the people dying from accidents and other adverse events in healthcare settings are mixed up with the people dying of what they ’re sick with – it’s normal and appropriate to see people dying in hospitals.
  • A triangle shirtwaist fire a day in healthcare might be hard to see clearly. Sad but true.
  • Transcript

    • 1. 1 Presentation for the Stockholm County Council Noel Eldridge, MS Department of Veterans Affairs National Center for Patient Safety (202) 461-6517 & noel.eldridge@va.gov 11/1/07
    • 2. 2 VA’s Current Patient Safety Performance Measure Radiology Reports verified within 2 days • Starting point in 2005 was 67% • Most recent quarter was 90% • Reports in first 3 Qtrs of FY 2007: 5,255,967 • The difference between 67% and 90% is over 1,600,000 reports per year, or ~4,400 per day everyday.
    • 3. 3 Why this is important… • RCA counts for 3 years shown • Delay in Treatment/ Diagnosis/Surgery is tied with Patient Falls for most reported coded category of Root Cause Analysis submitted by VAMCs Delay in Treatment/Diagnosis/Surgery
    • 4. 4 Using Administrative Data to Measure Patient Safety • This would be great if it worked (in particular the AHRQ Patient Safety Indicators [PSIs]). • At least three major problems: 1. False Negatives (a new version of the classic under-reporting problem plaguing patient safety) 2. False Positives (the new problem based on “present on admission” and dependence on coding) 3. How to analyze data: – designed for another purpose, – characterized by rare events, and – is often “non-Gaussian”, i.e., not “normally” distributed
    • 5. 5 Under-reporting? adverse events, complications, or illnesses? CDC’s Official Number of Deaths for Leading Causes of Death http://webapp.cdc.gov/sasweb/ncipc/leadcaus10.html • Heart disease: 652,486 • Cancer: 553,888 • Stroke (cerebrovascular diseases): 150,074 • Chronic lower respiratory diseases: 121,987 • Accidents (unintentional injuries): 112,012 • Diabetes: 73,138 • Alzheimer's disease: 65,965 • Influenza/Pneumonia: 59,664 • Nephritis, nephrotic syndrome, and nephrosis: 42,480 • Septicemia: 33,373 CDC Analysis published in Public Health Reports, March - April 2007, pp 160-166 The estimated deaths associated with healthcare-associated infections [for 2002] in U.S. hospitals were 98,987: • 35,967 were for pneumonia, • 30,665 for bloodstream infections, • 13,088 for urinary tract infections, • 8,205 for surgical site infections, and • 11,062 for infections of other sites. These are from completely separate analyses…
    • 6. 6 False Negatives? • 2002 VA data, from Rosen, et al, 2006, cases found: – Complications of Anesthesia = 55 – “Infection resulting from Medical Care” (highly restricted definition) = 816 – Postoperative Sepsis = 106 • VA performs over 350,000 operations per year… compare to PSI denominators
    • 7. 7 False Positives? - Decubitus Ulcer = 3316 - AHRQ analysis of data from California and NY indicates that >80% were present on admission - Post-op Hip Fracture = 29 - AHRQ data indicates >70% present on admission - A false positive and a false negative problem? (29 total? Leaves 10 in-hospital?) - Mayo Clinic study indicated that overall, only 63% occurred in hospital…
    • 8. 8 Recent Publication (not from AHRQ -- AHRQ paper in review) Impact of Diagnosis-Timing Indicators on Measures of Safety, Comorbidity, and Case Mix Groupings From Administrative Data Sources. Medical Care. 45(8):781-788, August 2007. Naessens, James M. ScD, MPH *; Campbell, Claudia R. PhD +; Berg, Bjorn BA *; Williams, Arthur R. PhD *; Culbertson, Richard PhD + Abstract: Context: Many attempts to identify hospital complications rely on secondary diagnoses from billing data. To be meaningful, diagnosis codes must distinguish between diagnoses after admission and those existing before admission. Objective: To assess the influence of diagnoses at admission on patient safety, comorbidity, severity measures, and case mix groupings for Medicare reimbursement. Design: Cross-sectional association of various diagnosis-based clinical and performance measures with and without diagnosis present on admission. Setting: Hospital discharges from Mayo Clinic Rochester hospitals in 2005 (N = 60,599). Patients: All hospital inpatients including surgical, medical, pediatric, maternity, psychiatric, and rehabilitation patients. About 33% of patients traveled more than 120 miles for care. Main Outcome Measures: Hospital patient safety indicators, comorbidity, severity, and case mix measures with and without diagnoses present at admission. Results: Over 90% of all diagnoses were present at admission whereas 27.1% of all inpatients had a secondary diagnosis coded in-hospital. About one-third of discharges with a safety indicator were flagged because of a diagnosis already present at admission, more likely among referral patients. In contrast, 87% of postoperative hemorrhage, 22% of postoperative hip fractures, and 54% of foreign bodies left in wounds were coded as in-hospital conditions. Severity changes during hospitalization were observed in less than 8% of discharges. Slightly over 3% of discharges were assigned to higher weight diagnosis-related groups based on an in-hospital complication. Conclusions: In general, many patient safety indicators do not reliably identify adverse hospital events, especially when applied to academic referral centers. Except as noted, conditions recorded after admission have minimal impact on comorbidity and severity measures or on Medicare reimbursement. (C) 2007 Lippincott Williams & Wilkins, Inc.
    • 9. 9 n= 1800+ Mean = 1.0 Std. Dev. = 1.8 Median = 0 Non-normally Distributed “Rare” Events 3+ years of data for nursing home sections of VA Medical Centers – statistical analysis based on a normal distribution is wrong and/or useless here: O/E ratios, p values, etc.
    • 10. 10 Triangle Shirtwaist Factory Fire of 1911 • March 16, 1911 A report on fire traps is published. The report argues that many New York City buildings lack “even the most indispensable precautions necessary.” • March 25, 1911 Shortly before quitting time, a fire breaks out on the eighth floor of the building housing the Triangle Shirtwaist factory. The fire kills 146 victims. • April 2, 1911 A meeting is held to discuss concerns over lack of safe working conditions in New York City's factories. Resolutions are passed demanding new legislation.
    • 11. 11 What a Triangle Shirtwaist Factory Fire Every Day Would be in U.S. Healthcare • 146 x 365 = 53,290 deaths • 53,290 / 6,007 = 8.9 per year per hospital • 365 / 8.9 = 41 days between deaths or • 53,290 / 36,600,000 = 0.15% (1 in 675 admissions) • Not so hard to believe… but would be 2.1% of all deaths in US (53,290 / 2,443,387) • IOM said 44,000 to 98,000 in 1999. Estimates since have ranged from about 15,000 to over 200,000.