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Table 2 Accuracy of the two algorithms vs. the Emilia-Romagna Dialysis (ERDR) registry

From: Developing and validating an algorithm to identify incident chronic dialysis patients using administrative data

  Algorithm 1 Algorithm 2
Incident cases identified by the algorithm 680 676
 found in ERDR, incident in 2014 571 554
 found in ERDR, incident in a different year 70 54
 not found in ERDR 39 68
Incident ERDR cases in 2014 missed by the algorithm 58 72
Percentage agreement 77.4% 74.1%
Sensitivity 90.8% 88.5%
Positive predictive value (PPV) 84.0% 82.0%