Figure 2
From: Cord Blood 25-hydroxyvitamin D and Fetal Growth in the China-Anhui Birth Cohort Study
Unadjusted association of cord blood 25(OH)D concentrations and birth weight using Gaussian curve-fitting model with knot at 40 nmol/L (P < 0.001).
The solid line represents the trend for changes in birth weight in mean values across increasing cord blood 25(OH)D concentrations and dotted lines represent the 95% confidence interval.
