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Exhibit 15. Accuracy of adjudicated algorithm at each participating hospital

Accuracy of Adjudication at DHAccuracy of Adjudication at IH
  Routine Surveillance   Routine Surveillance 
Adjudicated SSIno SSITotalAdjudicated SSIno SSITotal
SSI61.427.42SSI90713
no SSI314101348no SSI161155911575
Total91411.41420.4Total251155911584
          
 Sensitivity66.7% Sensitivity36.0%
 Specificity99.9% Specificity100.0%
 Positive Predictive Value80.9% Positive Predictive Value100.0%
 Negative Predictive Value99.8% Negative Predictive Value99.9%
Accuracy of Adjudication at VA SLCHCSAccuracy of Adjudication at VVMC
  Routine Surveillance   Routine Surveillance 
Adjudicated SSIno SSITotalAdjudicated No Change 
SSI2435    
no SSI2560562    
Total4564568    
          
 Sensitivity50.0%   
 Specificity99.3%   
 Positive Predictive Value33.37%   
 Negative Predictive Value99.6%   

DH = Denver Health; IH = Intermountain Healthcare; VA SLC HCS = Veterans Affairs Salt Lake City Health Care System; VVMC = Vail Valley Medical Center; SSI = surgical site infection.

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Page last reviewed December 2012
Internet Citation: Exhibit 15. Accuracy of adjudicated algorithm at each participating hospital. December 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/final-reports/ssi/ssiexh15.html