Fig. 3From: The effect of exercise during pregnancy on gestational diabetes mellitus in normal-weight women: a systematic review and meta-analysisAssessment of risk of bias. (a) Risk of bias graph about each risk of bias item presented as percentage across all included studies. (b) Summary of risk for bias for each trial; Plus sign: low risk of bias; minus sign: high risk of bias; question mark: unclear risk of biasBack to article page