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Table 3 The validity of predictive model under different cut-off value in different populations (%)

From: Prediction of posttraumatic stress disorder among adults in flood district

  Group 2 All subjects
Cutoff value Sen Spe CA PPV NPV Sen Spe CA PPV NPV
25.0 100.0 0.0 9.2 9.2   100.0 0.0 9.2 9.2  
39.5 99.9 8.2 16.6 9.9 99.9 99.9 8.4 16.8 9.9 99.9
57.5 95.3 51.2 55.2 16.5 99.1 94.6 51.4 55.4 16.4 99.0
62.5 90.6 60.4 63.2 18.7 98.5 90.3 60.6 63.3 18.8 98.4
63.5 89.4 63.4 65.8 19.8 98.3 88.8 63.3 65.6 19.6 98.2
64.5 88.0 65.9 67.9 20.6 98.2 87.4 65.8 67.8 20.5 98.1
65.5 86.8 67.4 69.2 21.2 98.1 86.5 67.3 69.1 21.1 98.0
66.5 85.1 69.6 71.0 22.0 97.9 85.3 69.4 70.9 22.0 97.9
67.5 84.0 72.2 73.3 23.4 97.8 83.3 71.8 72.9 23.0 97.7
68.5 82.3 73.9 74.7 24.1 97.6 81.5 73.4 74.1 23.6 97.5
69.5 80.5 75.0 75.5 24.5 97.4 80.2 74.5 75.0 24.1 97.4
70.5 78.8 76.4 76.6 25.2 97.3 78.8 75.9 76.2 24.8 97.3
71.5 76.4 79.4 79.1 27.2 97.1 76.0 79.0 78.7 26.8 97.0
73.5 71.1 83.3 82.2 30.0 96.6 69.9 83.0 81.8 29.3 96.5
78.5 49.6 89.3 85.7 31.9 94.6 51.8 89.6 86.1 33.5 94.8
97.5 10.9 98.8 90.7 47.8 91.7 11.6 98.8 90.8 49.4 91.7
130.0 0.0 100.0 90.8   90.8 0.0 100.0 90.8   90.8