Table 3.
Results of logistic regression analyses for development of GDM according to maternal serum vitamin D levels in early pregnancy
| Serum 25(OH)D (ng/mL) | Unadjusted OR (95% CI) |
P | Adjusted OR a (95% CI) |
P | Adjusted ORb (95% CI) |
P |
|---|---|---|---|---|---|---|
| Deficiency (< 20.0) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | |||
| Insufficiency (20.0-29.9) | 1.04 (0.88-1.23) | 0.652 | 1.03 (0.87-1.22) | 0.757 | 1.03 (0.86-1.23) | 0.751 |
| Sufficiency (≥ 30.0) | 0.63 (0.45-0.89) | 0.010 | 0.64 (0.45-0.91) | 0.012 | 0.65 (0.45-0.93) | 0.019 |
Abbreviations: 25(OH)D 25-hydroxyvitamin D, GDM Gestational diabetes mellitus, OR Odds ratio, CI Confidence interval
aAdjusted for prepregnancy BMI, maternal age
bAdjusted for prepregnancy BMI, maternal age, glycosylated hemoglobin A1c, fasting blood glucose, triglycerides in early pregnancy