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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1.1 Total number of trials published | 5 | 750 | Odds Ratio (M‐H, Fixed, 95% CI) | 3.90 [2.68, 5.68] |
| 1.1.1 Positive versus negative or null | 5 | 750 | Odds Ratio (M‐H, Fixed, 95% CI) | 3.90 [2.68, 5.68] |
