Table 3 Sensitivity, specificity, and likelihood ratios at various cut-off points of the Russian version of the PHQ-9
PHQ-9 score | Sensitivity (%) | Specificity (%) | Classified (%) | LR+ | LR− |
|---|---|---|---|---|---|
≥ 6 | 92.7 | 64.2 | 67.8 | 2.59 | 0.11 |
≥ 7 | 86.8 | 73.5 | 75.1 | 3.28 | 0.18 |
≥ 8 | 79.4 | 80.1 | 80.0 | 4.00 | 0.26 |
≥ 9 | 67.7 | 85.4 | 83.2 | 4.64 | 0.38 |
≥ 10 | 67.7 | 89.7 | 87.0 | 6.59 | 0.36 |
≥ 11 | 58.8 | 92.0 | 87.9 | 7.34 | 0.45 |
≥ 12 | 52.9 | 93.8 | 88.8 | 8.59 | 0.50 |
≥ 13 | 45.6 | 95.9 | 89.7 | 11.10 | 0.57 |
≥ 14 | 35.2 | 96.3 | 88.8 | 9.55 | 0.67 |