Comparison 2. Prefabricated foot orthoses (PFOs) versus shoes in asymptomatic flat feet.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
2.1 Proportion without pain	1	106	Risk Ratio (M‐H, Random, 95% CI)	0.94 [0.76, 1.16]
2.2 Withdrawal due to adverse events	4	338	Risk Ratio (M‐H, Random, 95% CI)	0.99 [0.79, 1.23]