Table 1. Selected characteristics of the study sample1.
| Variable | n | |
| Age, y | 529 | 9.9±1.7 |
| 5 to 8 y, % | 91 | 17.5 |
| 8 to 10 y, % | 181 | 33.5 |
| 10+ y, % | 257 | 49.0 |
| Girls, % | 268 | 50.5 |
| Menarche, % | 5 | 2.0 |
| Weight, kg | 536 | 26.3±1.3 |
| Height, cm | 537 | 131.5±10.4 |
| BMI, kg/m | 536 | 14.8 (2.2) |
| Weight-for-age z score2 | 279 | −1.3 (1.1) |
| Height-for-age z score | 537 | −1.0 (1.2) |
| BMI-for-age z score | 536 | 1.0 (1.2) |
| Serum 25-hydroxyvitamin D, nmol/L | 529 | 72.7±1.2 |
| Serum 1,25-dihydroxvitamin D, pmol/L | 523 | 199.1±1.3 |
| Parathyroid hormone, ng/L | 518 | 35.0±1.5 |
1
Values are geometric mean ± geometric SD or median (IQR) unless specified. Note: Geometric SD is a factor, not a quantity. Powers of the geometric SD can be either multiplied by (or divided into) the geometric mean to determine the set of values that lie n geometric SDs from the mean.
2
WHO Reference 2007 does not provide weight-for-age charts beyond 10 years of age.