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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Change in % inspiratory O2 | 1 | Mean Difference (IV, Fixed, 95% CI) | Subtotals only | |
| 1.1 After 1‐4 hours | 1 | 18 | Mean Difference (IV, Fixed, 95% CI) | ‐4.99 [‐15.51, 5.53] |
| 1.2 After 4‐12 hours | 1 | 18 | Mean Difference (IV, Fixed, 95% CI) | ‐10.61 [‐24.86, 3.64] |
