RT Journal Article SR Electronic T1 Vitamin D status and lung function in children with asthma JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP P4226 VO 44 IS Suppl 58 A1 Sebnem Ozdogan A1 Gizme Sari A1 Ibrahim Hakki Aktan A1 Belma Aydin A1 Canan Irmak A1 Sabanur Cavdar YR 2014 UL http://erj.ersjournals.com/content/44/Suppl_58/P4226.abstract AB Purpose: Although Turkey is a sunny country, vitamin D deficiency is quite prevelant. In the last few years, there have been few studies showing the association between serum vitamin D levels and asthma severity in children. In this study we aimed to examine the association between serum 25-hydroxy vitamin D3 levels and asthma control and lung function as measured by pulmonary function tests.Method: We conducted a cross-sectional study involving children with asthma and healthy controls aged 7-17 years old. Vitamin D status was assessed by measuring serum 25-hydroxy vitamin D3 in both groups. The relationship between serum vit D levels and asthma control and pulmonary function tests were also examined in asthmatic patients.Results: 71 asthmatic children and 71 healthy controls were recruited. Mean age in asthmatic group was 11,9 ± 1,93 years old. 25-hydroxy vitamin D3 levels were low in both asthmatics and control group (12,9±6,27 and 12,3± 6,4 ng/ml respectively). The asthma control assessment was significantly worse in men. Vitamin D levels were significantly low in women especially who completely covering the skin except face and hands. There was no correlation between Vit D levels and asthma control, and pulmonary functions. (p>0,05).Conclusion: Contrary to the most previous studies, Vit D levels do not correlate with neither asthma control nor lung function.