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| Methods | Randomised, placebo‐controlled double‐blind;2 parallel groups | |
| Participants | Pre‐operative women (n=20); University hospital, Germany | |
| Interventions | 150 mg 3 times (150 mg kavalactones) daily for 1 week | |
| Outcomes | Responder ‐ non‐responder ratio. Differential reduction of anxiety in favour of kava (p<0.05) | |
| Notes | Adverse events (kava group): not detailed Jadad score: 2 | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Unclear risk | B ‐ Unclear |
