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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Mortality | 32 | Odds Ratio (M‐H, Fixed, 95% CI) | Subtotals only | |
| 2 Unfavourable outcome | 27 | Odds Ratio (M‐H, Fixed, 95% CI) | Subtotals only | |
| 3 Pneumonia | 12 | Odds Ratio (M‐H, Fixed, 95% CI) | Subtotals only |
