| Methods | N; B; Y; Y; Y; Y | |
| Participants | 40 women; gynaecological; ASA1,2; exc' antiemetic, allergy, renal/liver/blood disease | |
| Interventions | Preoperative Either: DROPERIDOL 1.25mg i.v; or ONDANSETRON 4mg i.v. | |
| Outcomes | All outcomes. Postop 0‐24 hours. | |
| Notes | Side effects not recorded. Retching categorized as vomiting. | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Unclear risk | D ‐ Not used |
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