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Table 2 Vitamin D status

From: Efficacy and safety of early supplementation with 800 IU of vitamin D in very preterm infants followed by underlying levels of vitamin D at birth

Variable Cord 25(OH)D concentrations <10 ng/mL Cord 25(OH)D concentrations ≥10 ng/mL P
At birth
 N 20 29  
 Serum 25(OH)D levels 8.3 ± 1.9 21.4 ± 8.5 <0.001
 Vitamin D sufficiency (>30 ng/mL) 0 (0%) 5 (17%) 0.07
32 ± 1 weeks postmenstrual age
 N 13 18  
 Serum 25(OH)D levels 15.3 ± 10.1 24.1 ± 9.3 0.05
 Vitamin D sufficiency (>30 ng/mL) 3 (23%) 4 (22%) 1.00
36 ± 1 weeks postmenstrual age
 N 17 26  
 Serum 25(OH)D levels 43.1 ± 20.3 57.7 ± 21.9 0.03
 Vitamin D sufficiency (>30 ng/mL) 11 (65%) 23 (88%) 0.12
  1. Data are presented as n (%), median (range), or mean ± SD