Table 3 Prevalence and test performance of the single item screener using the “depressive mood” definition of the 9-item Patient Health Questionnaire (PHQ-9) as reference standard (95% confidence interval)
Age group | Prevalence | Sensitivity | Specifity | ROC area | LR+ | LR- | PPV | NPV |
|---|---|---|---|---|---|---|---|---|
34-44 | 20 (17–23.3) | 37.5 (29.1-46.5) | 96.5 (94.5-97.9) | .67 (.627-.713) | 10.6 (6.42-17.7) | .648 (.556-.742) | 72.7 (60.4-83) | 86 (82.9-88.8) |
45-54 | 25 (22–27.9) | 46.1 (38.7-53.7) | 95.5 (93.4-97) | .708 (.67-.745) | 10.2 (6.72-15.4) | .565 (.493-.647) | 76.9 (67.8-84.4) | 84.4 (81.3-87.2) |
55-64 | 31 (28–34.9) | 45.8 (39.4-52.4) | 93.7 (91.3-95.6) | .698 (.664-.731) | 7.26 (5.08-10.4) | .578 (.514-.651) | 76.9 (69.1-83.6) | 79 (75.6-82.2) |
65-74 | 32 (28–35.6) | 47.9 (41–54.8) | 92.7 (89.9-94.9) | .703 .667-.739) | 6.54 (4.58-9.35) | .562 (.493-.642) | 75.4 (67.2-82.4) | 79.2 (75.4-82.6) |
75-85 | 34 (29–39.4) | 52.5 (43.2-61.6) | 91 (86.6-94.3) | .717 (.669-.765) | 5.82 3.74-9.05) | .523 (.432-.632) | 75.3 (64.7-84) | 78.5 (73.1-83.3) |
Female | 34 (32–36.3) | 48.8 (44.6-53.1) | 92.3 (90.5-93.8) | .705 (.683-.728) | 6.31 (5.05-7.89) | .555 (.51-.603) | 76.4 (71.6-80.8) | 77.8 (75.4-80.1) |
Male | 22 (20–23.8) | 41.5 (36.1-47) | 96.1 (94.8-97.1) | .688 (.661-.715 | 10.6 (7.76-14.4) | .809 (.555-.667) | 74.5 (67.5-80.6) | 85.6 (83.6-87.5) |
Total | 28 (26–29.6) | 46.1 (42.8-49.4) | 94.3 (93.2-95.2) | .702 (.685-.719) | 8.04 (6.71-9.64) | .572 (.538-.608) | 75.7 (71.9-79.3) | 81.8 (80.3-83.3) |