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Table 4 Norm values for DESC-II

From: Validation of the Rasch-based Depression Screening in a large scale German general population sample

raw score frequency percentage percentiles θ Z T
0 963 38.4 38.4 -6.03 -1.02 40
1 273 10.9 49.3 -4.74 -0.36 46
2 244 9.7 59.0 -3.93 0.05 50
3 159 6.3 65.3 -3.41 0.31 53
4 129 5.1 70.5 -3.00 0.52 55
5 120 4.8 75.2 -2.66 0.70 57
6 106 4.2 79.5 -2.35 0.85 59
7 81 3.2 82.7 -2.08 0.99 60
8 58 2.3 85.0 -1.82 1.12 61
9 54 2.2 87.2 -1.58 1.25 62
10 55 2.2 89.4 -1.35 1.36 64
11 47 1.9 91.2 -1.13 1.48 65
12 37 1.5 92.7 -0.92 1.58 66
13 44 1.8 94.5 -0.71 1.69 67
14 37 1.5 95.9 -0.51 1.79 68
15 30 1.2 97.1 -0.31 1.89 69
16 17 .7 97.8 -0.11 1.99 70
17 17 .7 98.5 0.08 2.09 71
18 5 .2 98.7 0.27 2.19 72
19 6 .2 98.9 0.46 2.29 73
20 6 .2 99.2 0.65 2.38 74
21 3 .1 99.3 0.84 2.48 75
22 7 .3 99.6 1.03 2.58 76
23 2 .1 99.6 1.22 2.67 77
24 3 .1 99.8 1.41 2.77 78
25 1 .0 99.8 1.61 2.87 79
26 1 .0 99.8 1.82 2.98 80
27 2 .1 99.9 2.05 3.10 81
30 1 .0 100.0 2.86 3.51 85
>/= 31 1 .0 100.0 3.22 3.69 87
  1. Note: θ: estimated person's latent trait score for depression; Z: mean = 0, SD = 1; T: mean = 50, SD = 10