Comparison 1. Surgery (tonsillectomy +/‐ adenoidectomy) versus control.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Proportion of patients whose symptoms have completely resolved	2	65	Risk Ratio (M‐H, Random, 95% CI)	4.38 [0.64, 30.11]
2 Number of episodes of fever and associated symptoms (per person‐month)	2	65	Rate Ratio (Fixed, 95% CI)	0.08 [0.05, 0.13]
3 Use of corticosteroids	1	39	Risk Ratio (M‐H, Fixed, 95% CI)	0.58 [0.37, 0.92]