| Methods | N; B; Y; N; Y; Y | |
| Participants | 50 adults; 25 women; oral; ASA1,2 | |
| Interventions | Induction Either: PLACEBO; or ONDANSETRON 4mg i.v. | |
| Outcomes | Nausea; vomiting; nausea or vomiting. Postop 0‐24 hours. | |
| Notes | Side effects not recorded. Unclear how retching categorized. | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | High risk | C ‐ Inadequate |
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