Comparison 1. Beta‐blockers versus placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1.1 Change in vertigo frequency	1	114	Mean Difference (IV, Random, 95% CI)	‐0.30 [‐1.83, 1.23]
1.2 Serious adverse events	1	121	Risk Ratio (M‐H, Random, 95% CI)	0.63 [0.24, 1.67]
1.3 Disease‐specific health‐related quality of life	1	90	Mean Difference (IV, Random, 95% CI)	‐0.08 [‐0.63, 0.47]
1.4 Change in headache frequency	1	91	Mean Difference (IV, Random, 95% CI)	0.10 [‐1.87, 2.08]