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Forest plots showing the difference in glycemic control in all trials between soy isoflavone—administered and control groups. (A): FBG, (B): FI, (C): HbA1c, (D): HOMA-IR. Data calculated from the random-effects model are presented as weighted mean difference and 95% CI. The horizontal lines denote the 95% CIs, some of which extend beyond the limits of the scales. Letter in parentheses following the author’s name indicate a study with more than one treatment arm.
