Serum Vitamin D Levels and Vitamin D Supplement in Adult Patients with Asthma Exacerbation
(a) The bar graph comparison between patients during asthma exacerbation (, black bar) and without exacerbation (, clear bar); we found difference vitamin D status affects asthma control test score. (b) Vitamin D status and % predicted PEFR. The data were analyzed by Wilcoxon matched-pairs signed test and Mann–Whitney test. , .