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Table 3 Unadjusted regression analysis: Percentage difference in markers of glucose metabolism associated with, (a) Early-pregnancy 25OHD < 30 nmol/L, and (b) first antenatal visit in extended winter

From: Season and vitamin D status are independently associated with glucose homeostasis in pregnancy

  (a) Early-pregnancy 25OHD <30 nmol/L (b) First antenatal visit in extended winter
Dependent Variable % ∆a B 95% CI P % ∆a B 95% CI P
HOMA-IR early 18.5% 0.17 (−0.04, 0.39) 0.110 31.1% 0.27 (0.08, 0.46) 0.006
HOMA-IR 28 weeks 11.6% 0.11 (−0.13, 0.39) 0.371 21.9% 0.20 (0.00, 0.40) 0.051
Insulin early (μU/mL) 16.2% 0.15 (−0.06, 0.35) 0.173 30.6% 0.27 (0.08, 0.45) 0.005
Insulin 28 weeks (μU/mL) 7.3% 0.07 (−0.16, 0.30) 0.528 19.2% 0.18 (−0.02, 0.37) 0.074
Fasting glucose early (mmol/L)   0.03 (−0.06, 0.12) 0.541   −0.02 (−0.09, 0.05) 0.566
Fasting glucose 28 weeks (mmol/L)   0.09 (−0.02, 0.21) 0.112   0.07 (−0.03, 0.17) 0.157
1-h GCT 28 weeks (mmol/L)   0.04 (−0.32, 0.41) 0.824   −0.03 (−0.34, 0.29) 0.864
  1. a % difference in metabolic marker