Table 1 Characteristics of the study population
From: Vitamin D status in healthy Italian school-age children: a single-center cross-sectional study
Variable | Total sample (N = 470) |
|---|---|
Age (years – mean ± SD) | 8.1 ± 1.2 |
Weight (kg – mean ± SD) | 30.6 ± 11.8 |
Height (cm – mean ± SD) | 129.5 ± 8.8 |
BMI (kg/m2 – mean ± SD) | 17.9 ± 4.5 |
Z-score BMI (mean ± SD) | 0.50 ± 1.1 |
BMI percentile (mean ± SD) | 64 ± 29.6 |
Gender N (%) | |
  Male | 247 (52.6) |
  Female | 223 (47.4) |
Ethnicity N (%) | |
  Caucasian | 425 (90.4) |
  Non-caucasian | 45 (9.6) |
Season of blood sample N (%) | |
  Winter | 167 (35.5) |
  Spring | 114 (24.3) |
  Summer | 111 (23.6) |
  Fall | 78 (16.6) |
[25(OH)D] (ng/mL; mean ± SD) | 28.2 ± 9.4 |