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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 All‐cause mortality at short term | 7 | 830 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.61 [0.25, 1.48] |
| 2 All‐cause mortality at long term | 3 | 217 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.78 [0.22, 2.74] |
