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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 3.1 Peak cough flow | 1 | 11 | Mean Difference (IV, Random, 95% CI) | 71.40 [18.08, 124.72] |
| 3.2 Inspiratory capacity | 1 | 11 | Mean Difference (IV, Fixed, 95% CI) | ‐0.12 [‐33.44, 33.20] |
