| Methods | N; B; Y; N; N; N | |
| Participants | 50 women; hysterectomy; ASA1,2; exc' premedicant except temazepam | |
| Interventions | Postoperative PCA Either: PLACEBO; or DROPERIDOL 0.05mg/ml | |
| Outcomes | Nausea; vomiting; rescue antiemetic. Postop 0‐24 hours. | |
| Notes | No side effects. Retching categorized as vomiting. Unclear if vomiters nauseated. | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Low risk | A ‐ Adequate |
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