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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 FEV1 (% predicted) | 8 | 217 | Mean Difference (IV, Fixed, 95% CI) | ‐3.70 [‐7.09, ‐0.31] |
| 1.1 Children | 4 | 119 | Mean Difference (IV, Fixed, 95% CI) | ‐4.21 [‐9.33, 0.92] |
| 1.2 Adults | 4 | 98 | Mean Difference (IV, Fixed, 95% CI) | ‐3.31 [‐7.83, 1.21] |
