Article	Bias from randomization process	Bias due to deviations from intended interventions	Bias due to missing outcome data	Bias in measurement of outcome	Bias in selection of reported result	Overall bias
Beer et al. (17)	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK
Cadish et al. (18)	SOME RISK	LOW RISK	LOW RISK	LOW RISK	SOME RISK	MODERATE RISK
Duelund‐Jakobsen et al. (28)	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK
Duelund‐Jakobsen et al. (32)	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK
Duelund‐Jakobsen et al. (31)	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK
Marcelissen et al. (25)	SOME RISK	HIGH RISK	LOW RISK	LOW RISK	SOME RISK	HIGH RISK
Michelsen et al. (23)	LOW RISK	HIGH RISK	LOW RISK	LOW RISK	LOW RISK	HIGH RISK
Peters et al. (26)	SOME RISK	HIGH RISK	LOW RISK	LOW RISK	LOW RISK	HIGH RISK
Price et al. (20)	LOW RISK	LOW RISK	SOME RISK	LOW RISK	LOW RISK	MODERATE RISK
Thomas et al. (30)	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK
Siegel et al. (21)	SOME RISK	LOW RISK	LOW RISK	LOW RISK	LOW RISK	MODERATE RISK