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Table 2 The number of THRs with a reoperation due to infection found by either of the two methods including calculated sensitivity, specificity, positive predictive value (PPV), negative predictive values (NPV) and method agreement by Cohen’s Kappa

From: Validation of reoperations due to infection in the Swedish Hip Arthroplasty Register

   Questionnaire data   
   Yes No  
SHPR reoperation data Yes 302 98 400
  No 199 46759 46958
   501 46857 47358
  Sensitivity   0.60  
  Specificity   0.99  
  PPV   0.76  
  NPV   0.99  
  Agreement   0.67