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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Breathlessness | 18 | Std. Mean Difference (IV, Fixed, 95% CI) | Subtotals only | |
| 1.1 Change from baseline | 6 | 194 | Std. Mean Difference (IV, Fixed, 95% CI) | ‐0.11 [‐0.40, 0.19] |
| 1.2 Post‐treatment score | 12 | 338 | Std. Mean Difference (IV, Fixed, 95% CI) | ‐0.32 [‐0.53, ‐0.10] |
