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