Table 1.
Descriptive characteristics of study participants (n = 512).
| Characteristic | No. (%) or mean ± SD | Median | 25th percentile | 75th percentile |
|---|---|---|---|---|
| Age (years) | 14.0 ± 1.2 | 13.9 | 13.0 | 15.0 |
| Male | 262 (51.2) | |||
| Monthly family income < 3,000 pesos (US$230) | 311 (60.7) | |||
| Never smoker | 308 (60.2) | |||
| Past smoker | 149 (29.1) | |||
| Current smoker | 55 (10.7) | |||
| Fat mass (%) | 26.4 ± 8.8 | 26.0 | 19.1 | 32.3 |
| 25(OH)D (ng/mL) | 24.8 ± 8.2 | 24.1 | 19.2 | 29.2 |
| 1,25(OH)2D (pg/mL) | 58.6 ± 18.3 | 55.4 | 44.7 | 69.8 |
| BPb (μg/dL) | 4.6 ± 2.8 | 4.0 | 3.0 | 5.6 |
| Urinary Cd (μg/g creatinine) | 0.3 ± 0.4 | 0.22 | 0.15 | 0.33 |
| Urinary As (μg/g creatinine) | 41.1 ± 26.1 | 36.6 | 26.5 | 47.7 |
| Urinary U (μg/g creatinine) | 0.07 ± 0.3 | 0.04 | 0.03 | 0.06 |
| Urinary Mo (μg/g creatinine) | 70.1 ± 34.0 | 63.0 | 48.0 | 83.3 |
| Urinary Tl (μg/g creatinine) | 0.31 ± 0.18 | 0.27 | 0.19 | 0.38 |