Research Article

Maternal-Cord Blood Vitamin D Correlations Vary by Maternal Levels

Table 4

Characteristics of children with 25(OH)D levels above and below the lowest detectable limit.

Child’s level below lowest detectable limit
Child’s level not below lowest detectable limit

Baby is Black88.3%67.4%<0.05
Winter birth23.3%16.60.24
C-section delivery40%35.4%0.52
Child is firstborn6.7%22.7%<0.05
Mother is atopic50.9%65.1%0.05

Birthweight (in grams)3397 (711)3370 (608)0.85
Gestational age (weeks)38.9 (1.5)38.7 (2.0)0.87
Prenatal level (ng/mL)14.0 (8.7)26.8 (11.0)<0.05

Winter is defined as December, January, or February.
for Chi-square (categorical) or Wilcoxon Rank Sum test (continuous).