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| Outcome | Participants | Statistical method | Effect estimate |
| Proportion of participants requiring rescue medication | 84 | Odds Ratio (M‐H, Random, 95% CI) | 0.19 [0.05, 0.74] |
| Proportion of participants who required hospital admission | 84 | Odds Ratio (M‐H, Random, 95% CI) | 0.33 [0.01, 8.22] |
Data from single trials comparing prochlorperazine versus promethazine.
CI: confidence interval.
