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Table 3 Individual effect of 25(OH)D concentrations on GDM

From: Sufficience serum vitamin D before 20 weeks of pregnancy reduces the risk of gestational diabetes mellitus

Exposure Incidence, n (%) Non-adjusted Adjust model
OR (95% CI) p value OR (95% CI) p value
Continuous 25(OH)D per 10 ng/mL 919 (10.85%) 0.88 (0.80, 0.97) 0.009 0.90 (0.81, 0.99) 0.036
Clinical cutoffs
 < 20 (ng/mL) 492 (12.09%) Reference   Reference  
 20–30 (ng/mL) 329 (9.73%) 0.78 (0.68, 0.91) 0.001 0.78 (0.67, 0.90) 0.001
 ≥ 30 (ng/mL) 98 (9.65%) 0.78 (0.62, 0.98) 0.03 0.82 (0.65, 1.04) 0.102
  1. Adjust model: Adjusted for age, parity, body mass index, total serum cholesterol, triglycerides, fasting blood glucose