Table 2:
Estimates of the pooled mean PHQ-9 score and their 95% CIs when using the study-specific derived estimated sample means and standard deviations. For the pooled estimates under the “S1”, “S2”, and “S3” columns, all methods were applied assuming S1, S2, and S3 summary data, respectively, were extracted from all 58 primary studies, and the derived estimated study-specific sample means were meta-analyzed. When using the true study-specific sample means and standard deviations, the pooled estimate was 6.53 [95% CI: 5.97, 7.09]. In each column, the pooled estimate closest to the true value (i.e., 6.53) is in bold.
| S 1 | S 2 | S 3 | |
|---|---|---|---|
| Luo/Wan | 5.76 [5.15, 6.37] | 5.68 [5.06, 6.29] | 5.97 [5.36, 6.58] |
| QE | 6.26 [5.67, 6.85] | 6.88 [6.22, 7.53] | 6.49 [5.92, 7.07] |
| BC | 6.09 [5.48, 6.69] | 6.59 [5.91, 7.28] | 6.58 [6.01, 7.14] |