Fig. 2From: Sufficience serum vitamin D before 20 weeks of pregnancy reduces the risk of gestational diabetes mellitusThe association between 25(OH)D and GDM. a Smooth fitting curve adjusted for age, parity, body mass index, total serum cholesterol, triglycerides, fasting blood glucose. b Smooth fitting curve stratified by body mass index, adjusted for age, parity, total serum cholesterol, triglycerides, fasting blood glucoseBack to article page