Table 2.
Baseline (visit 1) characteristics and vitamin D status of exclusively breastfeeding infants by maternal supplementation group.
| Variables | N++ | 6000 IU Group (n = 95) Mean ± SD |
N++ | 600 IU Group (n = 95) Mean ± SD |
p-value |
|---|---|---|---|---|---|
| Weight (g) | 95 | 3404 ± 509 | 95 | 3338 ± 448 | 0.34 |
| Length (cm) | 95 | 50.8 ± 2.9 | 95 | 50.8 ± 2.1 | 0.86 |
| Head circumference (cm) | 95 | 34.8 ± 2.2 | 95 | 34.7 ± 1.4 | 0.58 |
| Sun exposure behavior | |||||
| • % BSA exposure outdoors | 95 | 25.6 ± 13.2 | 95 | 26.3 ± 16.8 | 0.75 |
| • Sun exposure (h/week) | 95 | 0.15 ± 0.5 | 95 | 0.11 ± 0.39 | 0.55 |
| • Sun index score (% BSA x sun exposure h/week) | 95 | 5.1 ± 18.1 | 95 | 3.95 ± 14.7 | 0.63 |
| Serum Ca (mmol/L) | 95 | 2.70 ± 0.08 | 94 | 2.69 ± 0.09 | 0.79 |
| Serum 25(OH)D (nmol/L) | 93 | 31.9 ± 21.7 | 94 | 29.6 ± 16.1 | 0.41 |
| Serum PTH (pg/ml) | 91 | 30.4 ± 21.4 | 91 | 31.1 ± 21.8 | 0.84 |
++ N = number of observations. No significant differences were observed between the two groups.