Table 3.

Risk of bias ROBINS Cochrane risk of bias assessment tool version 2

Authors	LOE	Bias due to confounding	Bias in selection of participants	Bias in classification of interventions	Bias due to deviations from intended interventions	Bias due to missing data	Bias in measurement of outcomes	Bias in selection of the reported results	Overall bias
Andrani 2013	III	Moderate	Moderate	Serious	Moderate	Low	Low	Low	Serious
Metzlaff [24]	III	Moderate	Moderate	Moderate	Low	Low	Low	Low	Moderate
Jensen [25]	III	Moderate	Low	Low	Low	Low	Moderate	Low	Moderate
Natero-Cisneros [26]	III	Moderate	Serious	Moderate	Low	Moderate	Low	Low	Serious
Razak [27]	III	Moderate	Low	Low	Low	Low	Low	Low	Moderate
Taleb [28]	III	Critical	Critical	Low	Low	Low	Low	Low	Critical
Li 2020	III	Moderate	Moderate	Low	Low	Low	Low	Low	Moderate
Fosser [30]	III	Moderate	Moderate	Serious	Low	Low	Low	Low	Serious
Shen [31]	III	Moderate	Moderate	Low	Low	Low	Low	Low	Moderate
Yoo [32]	III	Moderate	Moderate	Serious	Low	Serious	Low	Low	Serious
Liu [33]	III	Moderate	Moderate	Low	Low	Low	Low	Low	Moderate