Table 1.
General characteristics of the studied population: Iranian children aged 9–18 years, Fars Province, autumn and winter of 2011
| Total | Boys | Girls | |||||
|---|---|---|---|---|---|---|---|
| Variable | Mean | sd | Mean | sd | Mean | sd | P value* |
| Weight (kg) | 43·0 | 13·4 | 45·0 | 14·5 | 42·0 | 12·0 | 0·009 |
| Height (cm) | 154·0 | 14·3 | 157·4 | 15·9 | 150·8 | 11·7 | <0·001 |
| BMI (kg/m2) | 17·7 | 3·2 | 17·5 | 3·1 | 17·9 | 3·3 | 0·29 |
| Age (years) | 13·8 | 2·7 | 13·8 | 2·6 | 13·8 | 2·8 | 0·93 |
| BMI Z-score | −0·7 | 1·2 | −0·7 | 1·3 | −0·7 | 1·2 | 0·69 |
| Ca (mg/dl) | 9·9 | 0·5 | 10·0 | 0·6 | 9·8 | 0·4 | 0·009 |
| P (mg/dl) | 4·1 | 0·7 | 4·1 | 0·9 | 4·0 | 0·6 | 0·31 |
| ALP (IU/l) | 370 | 185 | 442 | 181 | 325 | 173 | <0·001 |
| 25(OH)D (ng/ml) | 15·2 | 5·6 | 15·7 | 5·7 | 14·7 | 5·3 | 0·07 |
ALP, alkaline phosphatase; 25(OH)D, 25-hydroxyvitamin D.
*
P value refers to the comparison of each variable between sexes.