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Risk-of-bias analysis using successive inclusion criteria
| Criteria | Studies (Effects) | Estimate (SE) | 95% CI | I2 (%) | |
|---|---|---|---|---|---|
| All studies | 41 (88) | 0.22 (0.04) | (0.14, 0.29) | 0.12 | 52 |
| + Low ROB outcome reporting | 31 (69) | 0.23 (0.05) | (0.13, 0.33) | 0.17 | 63 |
| + Low ROB allocation concealment | 7 (13) | 0.24 (0.09) | (0.01, 0.48) | 0.13 | 41 |
| + Low ROB sequence generation | 6 (10) | 0.24 (0.10) | (−0.02, 0.51) | 0.15 | 48 |
Abbreviation: ROB, risk-of-bias.
