Table 3 The association between vitamin D levels and asthma severity
From: Association of 25-hydroxy vitamin D with asthma and its severity in children: a case–control study
| Variables | 25(OH) vit. D | ||
|---|---|---|---|
| Asthma severity | Normal | Deficiency | Severe deficiency |
| Severe asthma | 31 (32%) | 40 (41.2%) | 26 (26.8%) |
| None-severe asthma | 75 (46%) | 65 (39.9%) | 23 (14.1%) |
| P-value* | 0.001 | ||