Table 4.
Comparison of sensitivity and specificity estimates between PHQ-8 and PHQ-9 across cutoffs 5–15 for all studies
| PHQ-8 – PHQ-9 | ||||
|---|---|---|---|---|
| Cutoff | Sensitivity | 95% CI | Specificity | 95% CI |
| 5 | −0·01 | (−0·01, 0·00) | 0·00 | (0·00, 0·01) |
| 6 | 0·00 | (−0·01, 0·00) | 0·01 | (0·00, 0·01) |
| 7 | −0·01 | (−0·02, 0·00) | 0·00 | (0·00, 0·01) |
| 8 | −0·01 | (−0·04, −0·01) | 0·00 | (0·01, 0·01) |
| 9 | −0·03 | (−0·06, −0·01) | 0·01 | (0·01, 0·01) |
| 10 | −0·03 | (−0·06, −0·02) | 0·01 | (0·00, 0·01) |
| 11 | −0·03 | (−0·06, −0·01) | 0·01 | (0·01, 0·01) |
| 12 | −0·05 | (−0·08, −0·03) | 0·01 | (0·00, 0·01) |
| 13 | −0·04 | (−0·06, −0·02) | 0·00 | (0·00, 0·01) |
| 14 | −0·05 | (−0·08, −0·03) | 0·01 | (0·00, 0·01) |
| 15 | −0·04 | (−0·07, −0·03) | 0·01 | (0·00, 0·01) |
a
N Studies = 54; N Participants = 16,742; N major depression = 2,097
CI: confidence interval