| Methods | Y; A; Y; Y; N; N | |
| Participants | 105 women; laparoscopy; ASA1,2; 19‐56 (mean 38); exc' antiemetic, psychoactive drug, obese, pregnant, ASA>2, N&V | |
| Interventions | Preoperative AND intraoperative twice Either: DOLASETRON 12.5mg i.v. then PLACEBO twice; or PLACEBO then DOLASETRON 12.5mg i.v. then PLACEBO; or PLACEBO twice then DOLASETRON 12.5mg i.v. | |
| Outcomes | Nausea; vomiting; rescue antiemetic. Postop 0‐4; 0‐24 hours. | |
| Notes | Retching categorized as vomiting. Unclear if vomiters nauseated or categorized once or twice. | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Low risk | A ‐ Adequate |
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