Table 3.

Risk-of-bias assessment of included nonrandomized studies (N=6).

Risk of Bias in Non-Randomized Studies of Interventions Tool	Bias due to confounding	Bias in selection of participants	Bias in classification of intervention	Bias due to deviations from intended interventions	Bias due to missing data	Bias in measurement of outcomes	Bias in selection of the reported result
Bailey et al [34]	Low	Serious	Low	Moderate	Low	Moderate	Moderate
Lo et al [38]	Moderate	Serious	Moderate	Moderate	Unclear	Serious	Moderate
Huber et al [35]	Serious	Serious	Moderate	Moderate	Serious	Moderate	Moderate
Clement et al [36]	Serious	Serious	Moderate	Serious	Moderate	Moderate	Moderate
Priebe et al [37]	Serious	Serious	Moderate	Moderate	Serious	Moderate	Moderate
Sandal et al [39]	Moderate	Moderate	Low	Low	Low	Moderate	Low