Vitamin D Supplementation Ameliorates Metabolic Dysfunction in Patients with PCOS: A SystematicReview of RCTs and Insight into the Underlying Mechanism

Figure 4

(a) Forest plot of FPG level in experimental and placebo groups. (b) Forest plot of FPG level in women with PCOS supplemented by day, week, and 20 days. (c) Forest plot of FPG level in women with PCOS who have vitamin D deficiency or insufficiency. (d) Forest plot of FPG level in women with PCOS supplemented with low- or high-dose vitamin D.

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