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Table 3 Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for different cut-off scores a of the K10, K6 and GHQ-12 for any present state DSM-IV disorder (n=293)

From: The performance of the K10, K6 and GHQ-12 to screen for present state DSM-IV disorders among disability claimants

Score K10 Sensitivity Specificity PPV NPV
21 0.816 0.594 0.41 0.90
22 0.776 0.664 0.45 0.89
23 0.750 0.733 0.50 0.89
24 0.724 0.779 0.53 0.89
25 0.671 0.816 0.56 0.88
26 0.645 0.839 0.58 0.87
27 0.526 0.866 0.58 0.84
Score K6     
11 0.855 0.516 0.38 0.91
12 0.829 0.618 0.43 0.91
13 0.750 0.700 0.47 0.89
14 0.684 0.770 0.51 0.87
15 0.579 0.843 0.56 0.85
16 0.526 0.876 0.60 0.84
17 0.447 0.903 0.62 0.82
Score GHQ-12     
17 0.566 0.705 0.40 0.83
18 0.539 0.728 0.41 0.82
19 0.526 0.788 0.46 0.83
20 0.487 0.829 0.50 0.82
21 0.408 0.862 0.51 0.81
22 0.382 0.889 0.55 0.80
23 0.329 0.912 0.57 0.80
  1. a Optimal cut-off scores in bold letter type.