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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 5.1 Age group | 23 | Risk Ratio (M‐H, Random, 95% CI) | Subtotals only | |
| 5.1.1 Children | 3 | 345 | Risk Ratio (M‐H, Random, 95% CI) | 1.67 [1.06, 2.62] |
| 5.1.2 Mixed children and adolescents | 5 | 606 | Risk Ratio (M‐H, Random, 95% CI) | 1.69 [0.96, 2.98] |
| 5.1.3 Adolescent | 16 | 6188 | Risk Ratio (M‐H, Random, 95% CI) | 1.31 [1.18, 1.45] |
