Comparison 2. Antivirals versus corticosteroids (AO versus OS): trials at lower risk of bias.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Incomplete recovery at end of study: trials at lower risk of bias	2	667	Risk Ratio (M‐H, Random, 95% CI)	2.69 [0.73, 10.01]
2 Incomplete recovery at end of study: full data set	3	768	Risk Ratio (M‐H, Random, 95% CI)	2.82 [1.09, 7.32]
3 Motor synkinesis and crocodile tears: trials at lower risk of bias	1	371	Risk Ratio (M‐H, Random, 95% CI)	1.70 [1.15, 2.50]
4 Motor synkinesis and crocodile tears: full data set	2	472	Risk Ratio (M‐H, Fixed, 95% CI)	1.52 [1.08, 2.12]
5 Adverse events	2	658	Risk Ratio (M‐H, Fixed, 95% CI)	0.85 [0.57, 1.28]