Comparison 12. Sensitivity analysis: fixed‐effect model.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
12.1 Pain (lower score=less pain)	4		Std. Mean Difference (IV, Fixed, 95% CI)	Subtotals only
12.1.1 Up to 3 months	4	309	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.23 [‐0.45, ‐0.00]
12.2 Function (higher score=better function)	3		Std. Mean Difference (IV, Fixed, 95% CI)	Subtotals only
12.2.1 Up to 3 months	3	302	Std. Mean Difference (IV, Fixed, 95% CI)	0.01 [‐0.22, 0.23]