Comparison 12. Risk of bias subgroup analysis: variance inequality and skewness.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
1 No signs of unequal variance or skewness | 72 | 4378 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.24 [‐0.33, ‐0.15] |
2 Signs of either unequal variance or skewness | 52 | 4108 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.20 [‐0.30, ‐0.11] |