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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 ROLL versus WGL | 4 | 642 | Risk Ratio (M‐H, Random, 95% CI) | 1.18 [0.71, 1.98] |
| 2 RSL versus WGL | 1 | 305 | Risk Ratio (M‐H, Fixed, 95% CI) | 1.51 [0.75, 3.03] |
