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Table 2 Study results

From: Vitamin D status in full-term exclusively breastfed infants versus full-term breastfed infants receiving vitamin D supplementation in Thailand: a randomized controlled trial

Characteristics Exclusively breastfed without vitamin D supplementation (control group)
n = 44
Exclusively breastfed with vitamin D supplementation (intervention group)
n = 43
p-value
Mother
Vitamin D levels
  25OHD2, ng/mL 0.10 ± 0.38 0.08 ± 0.37 0.83
  25OHD3, ng/mL 24.97 ± 7.77 23.67 ± 7.70 0.44
  25OHD (total), ng/mL 25.08 ± 7.75 23.75 ± 7.64 0.42
Vitamin D (25OHD) status    0.25
  Deficiency, < 12 ng/mL 1 (2.3) 1 (2.3)  
  Insufficiency, 12–20 ng/mL 9 (20.5) 15 (34.9)  
  Sufficiency, > 20 ng/mL 34 (77.3) 27 (62.8)  
Infant
Vitamin D levels
  25OHD2, ng/mL 0.00 ± 0.00 0.00 ± 0.00
  25OHD3, ng/mL 20.57 ± 12.66 46.01 ± 16.42 < 0.01
  25OHD (total), ng/mL 20.57 ± 12.66 46.01 ± 16.42 < 0.01
Vitamin D (25OHD) status    < 0.01
  Deficiency, < 12 ng/mL 11 (25.0) 0 (0.0)  
  Insufficiency, 12–20 ng/mL 14 (31.8) 3 (7.0)  
  Sufficiency, > 20 ng/mL 19 (43.2) 40 (93.0)  
Serum bone markers
  Calcium, mg/dL 10.60 ± 0.37 10.57 ± 0.32 0.73
  Phosphorous, mg/dL 5.47 ± 0.45 5.53 ± 0.40 0.49
  ALP, U/L 250.41 ± 59.71 242.79 ± 58.54 0.54
  iPTH, pg/mL 19.45 (10.85–34.35) 16.3 (12.1–23.5) 0.13
Physical growth parameters
  Δ Weight, g 2059 ± 545 2087 ± 495 0.80
  Δ Length, cm 8.5 ± 1.4 8.6 ± 1.5 0.94
  Δ Head circumference, cm 4.0 ± 0.8 4.0 ± 1.0 0.70
  1. Data are presented as mean ± standard deviation, n (%), or median (interquartile range)
  2. Δ represents the increment in each parameter from 2 to 6 months
  3. 25OHD2 25-hydroxyvitamin D2, 25OHD3 25-hydroxyvitamin D3, 25OHD total 25-hydroxyvitamin D, ALP Alkaline phosphatase, iPTH Intact parathyroid hormone