| Drug | Dose (mg) | Number of | Per cent with outcome | Risk ratio (95% CI) | ||
| Studies | Participants | Active | Placebo | |||
| Paracetamol | 500 | 3 | 319 | 7 | 6 | 0.9 (0.4 to 1.9) |
| Paracetamol | 600/650 | 13 | 1522 | 16 | 14 | 1.2 (0.9 to 1.5) |
| Paracetamol | 975/1000 | 19 | 2342 | 18 | 16 | 1.1 (0.9 to 1.3) |
| Note that statistically significant results in risk ratio are in BOLD | ||||||
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