Comparison 4. Subgroup analysis: duration since symptom onset for the comparison of convalescent plasma versus placebo or standard care alone for individuals with moderate to severe disease.
| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 4.1 All‐cause mortality at up to day 28 | 1 | 11552 | Risk Ratio (M‐H, Random, 95% CI) | 0.98 [0.88, 1.10] |
| 4.1.1 Duration of symptom onset up to 7 days | 1 | 4466 | Risk Ratio (M‐H, Random, 95% CI) | 0.93 [0.84, 1.02] |
| 4.1.2 Duration of symptom onset more than 7 days | 1 | 7086 | Risk Ratio (M‐H, Random, 95% CI) | 1.04 [0.95, 1.14] |