Table S2.

Risk of bias assessment of randomized controlled trials using the Risk of Bias 2 tool (ROB 2)

First author	Year	Risk of bias arising from the randomization process	Risk of bias due to deviations from the intended interventions (effect of assignment to intervention)	Risk of bias due to deviations from the intended interventions (effect of adhering to intervention)	Missing outcome data	Risk of bias in measurement of the outcome	Risk of bias in selection of the reported result	Overall risk of bias
Gladstone	2014	Low	Low	Moderate	Low	Low	Low	Low
Wouters	2022	Unclear	Moderate	Moderate	Moderate	Low	Low	Moderate