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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 PO2 (mmHg) | 1 | Mean difference (Random, 95% CI) | ‐7.75 [‐31.19, 15.69] | |
| 2 PCO2 (mmHg) | 1 | Mean difference (Random, 95% CI) | 0.75 [‐4.16, 5.66] |
