Table 3 Operating characteristics of DASS-D, DASS-A and EPDS at various cut-off scores for identifying depression and anxiety against the SCID
Cut-point | Sensitivity | Specificity | Youden Index | Correctly Classified | LR +  | LR- |
|---|---|---|---|---|---|---|
DASS-D (Depression subscale) | ||||||
   >  = 0 | 100.00% | 0.00% | 0% | 11.30% | 1.0000 |  |
   >  = 1 | 69.23% | 75.49% | 44.72% | 74.78% | 2.8246 | 0.4076 |
   >  = 2 | 53.85% | 89.22% | 43.07% | 85.22% | 4.9930 | 0.5173 |
   >  = 3 | 38.46% | 95.10% | 33.56% | 88.70% | 7.8462 | 0.6471 |
   >  = 4 | 30.77% | 96.08% | 26.85% | 88.70% | 7.8462 | 0.7206 |
   >  = 6 | 7.69% | 99.02% | 6.71% | 88.7§0% | 7.8462 | 0.9322 |
   >  = 7 | 0.00% | 99.02% | -0.98% | 87.83% | 0.0000 | 1.0099 |
   >  = 8 | 0.00% | 100.00% | 0% | 88.70% |  | 1.0000 |
DASS-A (Anxiety subscale) | ||||||
   >  = 0 | 100.00% | 0.00% | 0% | 14.78% | 1.0000 |  |
   >  = 1 | 52.94% | 75.51% | 28.45% | 72.17% | 2.1618 | 0.6232 |
   >  = 2 | 23.53% | 89.80% | 13.33% | 80.00% | 2.3059 | 0.8516 |
   >  = 3 | 17.65% | 96.94% | 14.59% | 85.22% | 5.7647 | 0.8495 |
   >  = 5 | 5.88% | 100.00% | 5.88% | 86.09% |  | 0.9412 |
   >  = 6 | 0.00% | 100.00% | 0% | 85.22% |  | 1.0000 |
Edinburgh Postpartum Depression Scale (EPDS) | ||||||
   >  = 0 | 100.00% | 0.00% | 0% | 11.30% | 1.0000 |  |
   >  = 1 | 76.92% | 66.67% | 43.59% | 67.83% | 2.3077 | 0.3462 |
   >  = 2 | 53.85% | 81.37% | 35.22% | 78.26% | 2.8907 | 0.5672 |
   >  = 3 | 30.77% | 87.25% | 18.02% | 80.87% | 2.4142 | 0.7934 |
   >  = 4 | 30.77% | 94.12% | 24.89% | 86.96% | 5.2308 | 0.7356 |
   >  = 5 | 30.77% | 95.10% | 25.87% | 87.83% | 6.2769 | 0.7280 |
   >  = 6 | 30.77% | 97.06% | 27.83% | 89.57% | 10.4615 | 0.7133 |
   >  = 7 | 30.77% | 98.04% | 28.81% | 90.43% | 15.6923 | 0.7062 |
   >  = 8 | 23.08% | 99.02% | 22.10% | 90.43% | 23.5385 | 0.7768 |
   >  = 9 | 15.38% | 100.00% | 15.38% | 90.43% |  | 0.8462 |
   >  = 12 | 7.69% | 100.00% | 7.69% | 89.57% |  | 0.9231 |
   >  = 13 | 0.00% | 100.00% | 0% | 88.70% |  | 1.0000 |