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Table 2 Vitamin D insufficiency and clinical characteristics of asthma

From: Severe and uncontrolled adult asthma is associated with vitamin D insufficiency and deficiency

  25(OH)D < 30 ng/ml 25(OH)D ≥ 30 ng/ml p-value
Allergy    
Yes 159 (67.4%) 77 (32.6%)  
No 28 (66.7%) 14 (33.3%) 0.359
OCS use    
Yes 58 (77.3%) 17 (22.7%)  
No 130 (63.4%) 75 (36.6%) 0.031
OCS dose (mg/d) 24 ± 29 16 ± 12 0.274
ICS use    
Yes 150 (68.2%) 70 (31.8%)  
No 38 (63.3%) 22 (36.7%) 0.536
ICS dose (μg/d) 1310 ± 815 1232 ± 916 0.547
Age (years) 44.5 ± 13.0 46.0 ± 15.4 0.400
FEV1 (L) 2.3 ± 0.9 2.7 ± 1.0 0.003
FEV1 (%) 71.7 ± 23.4 81.4 ± 22.3 0.001
Reversibility (%) 13.1 ± 22.7 12.2 ± 23.3 0.838
Exhaled NO (ppb) 45 ± 46 31 ± 27 0.022
Total IgE (IU/ml) 544 ± 1292 365 ± 689 0.230
Duration of disease (years) 18.6 ± 13.5 17.5 ± 15.5 0.539
Sputum eosinophilia    
Yes 21 (95.5%) 1 (4.5%)  
No 36 (66.7%) 18 (33.3%) 0.008
Sputum eosinophils (%) 5.1 ± 11.9 0.5 ± 1.0 0.005
BMI (kg/m 2 ) 28.3 ± 6.3 25.1 ± 3.9 <0.001
IL-10 (ng/ml) 118.6 ± 122.6 114.2 ± 137.1 0.788
  1. Displayed are means ± SD for continuous endpoints and frequencies for categorical endpoints.