Table 4.
Clinician diagnosis of depression and the PHQ diagnosis of depression at varied thresholds of diagnosis
| Target parameter | Point estimate and confidence Interval | Detection criteria | |||
|---|---|---|---|---|---|
| PHQ9 (5+) | PHQ9 (10+) | PHQ2 (3+) | DSM 5 | ||
| Prevalence | % | 42.6 | 11.5 | 11.4 | 3.4 |
| 95% CI | 39.6, 45.7 | 9.6, 13.5 | 9.5, 13.4 | 2.2, 4.7 | |
| Sensitivity | % | 3.0 | 6.0 | 5.2 | 2.9 |
| 95% CI | 1.4, 4.6 | 1.6, 10.3 | 1.1, 9.3 | −3.0, 8.9 | |
| Specificity | % | 100.0 | 99.3 | 99.2 | 98.8 |
| 95% CI | 99.4, 100.0 | 98.5, 99.8 | 98.4, 99.7 | 97.9, 99.4 | |
| PPV | % | 100.0 | 53.8 | 46.2 | 7.7 |
| 95% CI | 75.3, 100.0 | 25.1, 80.8 | 19.2, 74.9 | 0.2, 36.0 | |
| NPV | % | 58.0 | 89.0 | 89.0 | 96.7 |
| 95% CI | 54.8, 61.1 | 86.9, 90.8 | 86.9, 90.8 | 95.4, 97.7 | |
PHQ Patient Health Questionnaire