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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Nausea severity at 5 minutes post‐initial treatment | 4 | 115 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.18 [‐0.86, 0.49] |
