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Table 5 True positive and negatives (TP, TN), false positive and negatives (FP, FN), chi-square (X2) results, odds ratios (OR), sensitivity (%) and specificity (%) results for DASS-21 total, depression and anxiety cut-off scores for probable MDD

From: Prevalence and psychometric screening for the detection of major depressive disorder and post-traumatic stress disorder in adults injured in a motor vehicle crash who are engaged in compensation

Cut off score TP TN FN FP X 2 OR 95% CI Sensitivity Specificity
Total score
 30 45 36 15 13 25.4** 8.3** 3.5–19.7 77.6 70.6
 31 43 37 14 15 23.7** 7.6** 3.2–17.7 74.1 72.5
 32 43 37 14 15 23.7** 7.6** 3.2–17.7 74.1 72.5
 33 42 39 12 16 25.9** 8.5** 3.6–20.3 72.4 76.5
Depression
 10 42 38 13 16 23.9** 7.7** 3.3–18.0 76.4 70.4
 11 40 39 12 18 22.5** 7.2** 3.1–16.9 76.9 68.4
 12 40 39 12 18 22.5** 7.2** 3.1–16.9 69.0 76.5
 13 34 43 8 24 21.1** 7.6** 3.0–19.1 58.6 84.3
Anxiety
 6 42 32 19 16 13.6* 4.4* 1.9–9.9 72.4 62.7
 7 42 35 16 16 18.4** 5.7** 2.5–13.1 72.4 68.6
 8 42 35 16 16 18.4** 5.7** 2.5–13.1 72.4 68.6
 9 38 39 12 20 19.3** 6.2** 2.6–14.3 65.5 76.5
  1. * P < .01 **P < .001; 95% CI: 95% confidence intervals for OR