TABLE 4.
Quality assessment | No. of patients | Effect | Quality | |||||||
No. of studies | Design | Risk of bias | Inconsistency | Indirectness | Imprecision | Other considerations | Statins | Control | MD/RR (95% CI) | |
HDRS (follow-up 6–12 weeks; better indicated by lower values) | ||||||||||
7 | Randomized trials | No serious risk of bias | Serious1 | No serious indirectness | No serious imprecision | None | 223 | ‘225 | –2.79 (-3.83, –1.76)4 | MODER-ATE |
Rate of response (follow-up 6–12 weeks; better indicated by higher values) | ||||||||||
4 | Randomized trials | No serious risk of bias | No serious2 | No serious indirectness | No serious imprecision | None | 152 | 148 | 1.26 (0.98, 1.62) | MODER-ATE |
Remission rate (follow-up 6–12 weeks; better indicated by lower values) | ||||||||||
4 | Randomized trials | No serious risk of bias | No serious3 | No serious indirectness | No serious imprecision | None | 155 | 158 | 1.33 (0.89, 1.99) | LOW |
1The test for heterogeneity is not significant, and the I2 is high, 0.0%. 2The test for heterogeneity is not significant, and the I2 is low, I2 = 0.0% 3The test for heterogeneity is not significant, and the I2 is low, I2 = 20.7% 4Effect is the mean difference and 95% CI. HDRS, Hamilton depression rating scale; MD, mean difference; RR, relative risk; CI, confidence interval.