Table 2. Comparison between the groups stratified by the median vitamin D level (24 ng/mL).a .
| Variable | Vitamin D level | p | |
|---|---|---|---|
| < 24 ng/mL | ≥ 24 ng/mL | ||
| (n = 13) | (n = 13) | ||
| Age, years | 10 (9-11) | 8 (7-10) | 0.019 |
| Male/female, n/n | 9/4 | 10/3 | 0.658 |
| BMI, kg/m2 | 20 (17-23) | 17 (16-23) | 0.479 |
| Daily dose of inhaled corticosteroid, µg | 400 (200-400) | 400 (200-400) | 0.880 |
| Uncontrolled asthma | 38% | 30% | 0.999 |
| Secondhand smoke | 46% | 31% | 0.688 |
| Vitamin D, ng/mL | 19 ± 4 | 30 ± 4 | < 0.001 |
| Eosinophils, % | 11 ± 6 | 8 ± 7 | 0.351 |
| Eosinophils, cells/µL | 918 ± 464 | 448 ± 382 | 0.042 |
| Total IgE, IU/mL | 961 (696-2,283) | 621 (325-940) | 0.046 |
| FVC, % predicted | 101 ± 14 | 108 ± 6 | 0.548 |
| FEV1, % predicted | 89 ± 11 | 91 ± 8 | 0.990 |
| FEF25-75, % predicted | 96 ± 23 | 93 ± 20 | 0.905 |
a
Values expressed as mean ± SD or median (interquartile interval), except where indicated.