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. 2011 Jun 27;61(588):e419–e426. doi: 10.3399/bjgp11X583209

Table 3.

HAD-D, PHQ-9, and BDI-II depression severity measures: discriminatory performance of detecting at least moderate depression severity relative to HRSD-17

% Sensitivity % Specificity %PPVa %NPVb LR+vec LR-ved
(95% CI) (95% CI) (95% CI) (95% CI) (95% CI) (95% CI)
Moderate severity (defined by scales' developer) by HRSD-17 ≥14 (moderate) cut-off (APA criteria)
 HADS-D ≥11 54 (44 to 63) 89 (84 to 95) 79 (69 to 89) 71 (64 to 78) 4.93 (2.91 to 8.36) 0.52 (0.42 to 0.65)
 PHQ-9 ≥10 89 (83 to 95) 70 (62 to 78) 69 (61 to 77) 90 (84 to 96) 2.99 (2.26 to 3.95) 0.15 (0.09 to 0.28)
 BDI-II ≥20 86 (79 to 93) 70 (61 to 79) 71 (62 to 79) 86 (78 to 93) 2.87 (2.13 to 3.86) 0.20 (0.12 to 0.34)

Optimal cut-off for moderate severity (derived from ROC curve) by HRSD-17 ≥14 cut-off (APA criteria)
 HADS-D ≥9 74 (65 to 82) 76 (69 to 83) 70 (61 to 79) 79 (72 to 86) 3.07 (2.21 to 4.26) 0.35 (0.25 to 0.49)
 PHQ-9 ≥12 77 (69 to 86) 79 (72 to 86) 73 (64 to 82) 82 (76 to 89) 3.68 (2.57 to 5.27) 0.29 (0.20 to 0.43)
 BDI-II ≥23 74 (65 to 83) 75 (67 to 83) 72 (63 to 81) 78 (70 to 85) 3.02 (2.13 to 4.28) 0.34 (0.24 to 0.49)

Moderate severity (defined by scales' developers) by HRSD-17 ≥19 cut- off (NICE criteria)
 HADS-D ≥11 71 (59 to 84) 82 (77 to 88) 52 (40 to 64) 91 (87 to 96) 4.00 (2.79 to 5.73) 0.35 (0.22 to 0.54)
 PHQ-9 ≥10 98 (94 to 99) 57 (49 to 64) 39 (30 to 47) 99 (97 to 99) 2.27 (1.90 to 2.71) 0.04 (0.01 to 0.26)
 BDI-II ≥20 91 (83 to 99) 55 (47 to 63) 37 (28 to 46) 96 (91 to 99) 2.02 (1.66 to 2.45) 0.16 (0.06 to 0.41)

Optimal cut-off for moderate severity (derived from ROC curve) by HRSD-17 ≥19 cut- off (NICE criteria)
 HADS-D ≥10 82 (71 to 92) 75 (69 to 81) 47 (36 to 58) 94 (90 to 98) 3.25 (2.44 to 4.32) 0.25 (0.14 to 0.45)
 PHQ-9 ≥15 89 (81 to 98) 83 (78 to 89) 60 (49 to 71) 97 (94 to 99) 5.39 (3.79 to 7.67) 0.13 (0.06 to 0.29)
 BDI-II ≥28 83 (72 to 94) 80 (73 to 86) 54 (43 to 66) 94 (90 to 98) 4.05 (2.90 to 5.67) 0.22 (0.12 to 0.41)
a

Positive predictive value.

b

Negative predictive value.

c

Likelihood ratio for a positive result.

d

Likelihood ratio for a negative result.

APA = American Psychiatric Association. BDI-II = Beck Depression Inventory, Second Edition. HAD-D = Hospital and Anxiety Depression Scale – Depression Subscale. HRSD-17 = 17-item Hamilton Rating Scale for Depression interview. NICE = National Institute for Health and Clinical Excellence. PHQ-9 = Patient Health Questionnaire 9. ROC = receiver operating characteristics.