Herbal Medicines for Treating Metabolic Syndrome: A Systematic Review of Randomized Controlled Trials

Figure 6

(a) Risk of bias graph: reviewers’ assessments about each risk of bias item presented as percentages of all included studies. (b) Risk of bias summary: assessments about each risk of bias item for each included study. “+”: low risk, “?”: unclear risk, and “−”: high risk.

(a)

(b)