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Table 5 PPV and sensitivity of E linkage strategies. N linkage used as the reference standard.

From: Linkage of health and aged care service events: comparing linkage and event selection methods

Match strategy True positives (a) False positives (b) False negatives (c) Total links (E = a+b) PPV (a/E) Sensitivity (a/N)
  Number Per cent
Name-based N linkage (N) 8106 . . . . 8106 . . . .
Event-based E linkage       
Basic 6539 154 1567 6693 97.7 80.7
Constrained-SLG v1 7100 153 1006 7253 97.9 87.6
Constrained-SLG v2 7418 177 688 7595 97.7 91.5
Constrained-SLG v3 7420 170 686 7590 97.8 91.5
Constrained-PC v1 6936 142 1170 7078 98.0 85.6
Constrained-PC v2 7418 169 688 7587 97.8 91.5
Constrained-PC v3 7335 156 771 7491 97.9 90.5