Clinical Study

Serum Vitamin D Levels and Vitamin D Supplement in Adult Patients with Asthma Exacerbation

Figure 3

The correlation graph between age, asthma control test score, and % predicted PEFR with serum 25(OH)D levels. (a) The graph shows a negative linear correlation between age and serum 25(OH)D levels. (b) Positive linear correlation between asthma control test score and serum 25(OH)D levels. (c) Correlation between % predicted PEFR and serum 25(OH)D levels. Spearman’s test was used to determine correlation. Serum vitamin D levels during exacerbation (, black) and without exacerbation (, clear) asthma.