Table 3

Receiver Operator Characteristic (ROC) and Predictive Values
Cut-off Values
 Sensitivity
 Specificity
 1-specificity
 Gradient
 Predictive Values





Positive
 Negative
0
 100
 0
 100
 --
 --
 --
1
 100
 2
 98
 0
 22
 100
3
 100
 17
 83
 0
 22
 100
4
 91
 21
 79
 2.25
 21
 91
5
 91
 23
 77
 0
 22
 92
7
 91
 28
 72
 0
 23
 93
8
 91
 32
 68
 0
 24
 94
9
 91
 36
 64
 0
 25
 94
10
 82
 36
 64
 ∞
 23
 90
11
 82
 40
 60
 0
 24
 91
12
 82
 47
 53
 0
 27
 92
13
 82
 53
 47
 0
 29
 93
14
 82
 62
 38
 0
 33
 94
15
 73
 70
 30
 1.12
 36
 92
16
 64
 81
 19
 0.82
 44
 91
17
 64
 87
 13
 0
 44
 91
18
 55
 87
 13
 ∞
 50
 89
19
 55
 92
 8
 0
 60
 90
20
 55
 94
 6
 0
 67
 90
21
 55
 98
 2
 0
 86
 90
22
 55
 100
 0
 0
 100
 90
23
 36
 100
 0
 ∞
 100
 87
25
 18
 100
 0
 ∞
 100
 84
27
 9
 100
 0
 ∞
 100
 83

Suliman et al. Annals of General Psychiatry 2005 4:2   doi:10.1186/1744-859X-4-2
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