Table 3.

GRADE criteria for risk of bias evaluation. Green: No Risk of Bias; Yellow: Maybe Risk of Bias; Red: High Risk of Bias.

Reference	Methodological Quality	Directness of Evidence	Heterogeneity	Precision of Effect Estimates	Publication Bias	Level of Evidence	Recommendation for Use
Cattaneo et al. [51]						Moderate	Moderate
Mitano et al. [52]						Moderate	Moderate
Vogt et al. [41]						Moderate	Moderate
Araos et al. [48]						Low	Low
Nguyen et al. [53]						Moderate	Moderate
Saji et al. [54]						Moderate	Low
Qian et al. [55]						Moderate	Moderate
Zhuang et al. [50]						Moderate	Moderate
Haran et al. [56]						Moderate	Low
Liu et al. [49]						Moderate	Moderate
Saji et al. [57]						Moderate	Low
Ren et al. [58]						Moderate	Moderate
Liu et al. [59]						Moderate	Moderate
Scheperjans et al. [60]						Moderate	Moderate
Cerroni et al. [61]						Moderate	Moderate
Unger et al. [62]						Moderate	Moderate