From: A study of the diagnostic accuracy of the PHQ-9 in primary care elderly
Instrument and Cutpoint | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | + Likelihood Ratio | - Likelihood Ratio |
---|---|---|---|---|
PHQ-9 Cutpoint | ||||
≥6 | 77 | 69 | 2.5 | 0.34 |
(56-90) | (63-74) | |||
≥7 | 77 | 77 | 3.3 | 0.31 |
(56-90) | (70-81) | |||
≥8 | 77 | 83 | 4.4 | 0.28 |
(57-89) | (76-87) | |||
≥9 | 71 | 87 | 5.2 | 0.34 |
(51-85) | (80-91) | |||
≥10 | 59 | 89 | 5.1 | 0.47 |
(40-74) | (82-93) | |||
PHQ-2 Cutpoint | ||||
≥1 | 82 | 67 | 2.5 | 0.26 |
(62-94) | (61-71) | |||
≥2 | 71 | 73 | 2.6 | 0.40 |
(50-86) | (66-78) | |||
≥3 | 53 | 90 | 5.5 | 0.52 |
(35-67) | (85-95) | |||
≥4 | 35 | 98 | 18.4 | 0.66 |
(21-40) | (94-100) | |||
≥5 | 18 | 98 | 9.2 | 0.84 |
(7-22) | (95-100) | |||
15-item GDS Cutpoint | ||||
≥4 | 94 | 4 | 0.98 | 1.63 |
(85-99) | (1-5) | |||
≥5 | 88 | 14 | 1.0 | 0.93 |
(71-96) | (8-16) | |||
≥6 | 81 | 62 | 2.1 | 0.30 |
(60-93) | (55-65) | |||
≥7 | 56 | 79 | 2.7 | 0.55 |
(36-74) | (73-84) | |||
≥8 | 31 | 90 | 3.3 | 0.76 |
(16-46) | (86-95) |