Characteristics of participants according to 25OHD status (n = 940)a.

a Total sample size is not always n = 940 due to the missing values. Data are presented as mean (standard deviation) or number (percentage). 25OHD inadequacy = 25OHD ≤75nmol/l; 25OHD adequacy = 25OHD>75nmol/l.b p values are determined by independent t-test or Pearson chi-square test.c Included both emergency and elective caesarean sections.25OHD = 25-hydroxyvitamin D; FG = fasting glucose; 2HPPG = 2-hour postprandial glucose; GDM = gestational diabetes mellitusCharacteristics of participants according to 25OHD status (n = 940)a.