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Table 4 Agreement between claims algorithm and operative reports for partial versus radical nephrectomy

From: External validation of a claims-based algorithm for classifying kidney-cancer surgeries

  

PROCEDURE BASED ON OPERATIVE REPORT

 
  

Partial Nephrectomy

Radical Nephrectomy

Total

PROCEDURE BASED ON MEDICARE CLAIMS

Partial Nephrectomy

16

1

17

 

Radical Nephrectomy

1

102

103

 

Total

17

103

120

Observed agreement = 98.3%

Sensitivity = 94.1% (71.3%–99.9%)

Specificity = 99.0% (94.7%–99.9%)

Positive Predictive Value = 94.1% (71.3%–99.9%)

Negative Predictive Value = 99.0% (94.7%–99.9%)

  1. † Calculations are for identification of partial nephrectomies based on the operative report (medical record) as the reference-standard