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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Weaning failure | 8 | Risk Ratio (M‐H, Random, 95% CI) | Subtotals only | |
| 1.1 COPD | 3 | 351 | Risk Ratio (M‐H, Random, 95% CI) | 0.52 [0.36, 0.74] |
| 1.2 Mixed | 5 | 254 | Risk Ratio (M‐H, Random, 95% CI) | 0.73 [0.35, 1.51] |
