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| Primary analysis | Sensitivity analysis result | Description of analysis |
| Analysis 1.1 Improvement in vertigo frequency at up to 2 hours | RR 0.85 (95% CI 0.67 to 1.08) | Fixed‐effect model |
| Analysis 1.2 Improvement in headache at up to 2 hours | RR 0.68 (95% CI 0.49 to 0.96) | Fixed‐effect model |
CI: confidence interval; RR: risk ratio
