Objective: To study the association between serum vitamin D levels and levels of asthma control in children aged 5-15 years.
Methods: Children with physician-diagnosed asthma who were under follow-up for at least 6 months were enrolled. Participants were categorized into three asthma control groups as per standard guidelines, and their serum 25-hydroxy vitamin D levels and pulmonary function tests were compared.
Results: Out of 105 children with asthma enrolled in the study, 50 (47.6%) were controlled, 32 (30.5%) were partly controlled and 23 (21.9%) were uncontrolled. Median (IQR) serum vitamin D levels in these three groups were 9.0 (6.75, 15) ng/mL, 10 (6.25, 14.75) ng/mL and 8 (5, 10) ng/mL (P=0.24), respectively.
Conclusion: We did not observe any association of serum 25-hydroxy vitamin D levels with the level of control of childhood asthma.