Fig. 4

Risk of bias scores by sub-domain. For each sub-domain, the left (green), middle (yellow), and right (orange) bars represent the number of articles marked low, moderate, or high risk of bias, respectively.

Risk of bias scores by sub-domain. For each sub-domain, the left (green), middle (yellow), and right (orange) bars represent the number of articles marked low, moderate, or high risk of bias, respectively.