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Table 1 Demographic and lung function data of the study groups.

From: Relationship between airway inflammation and remodeling in patients with asthma and chronic obstructive pulmonary disease

Variable Asthma
n = 9
COPD
n = 11
P
Gender (n)    
   female 5 4 NS
   male 4 7 NS
Age (yr) 36 ± 10 57 ± 9 < 0.05
BMI (kg/m2) 24.3 ± 3.2 26.7 ± 5.1 NS
Smoking history n (%) 3 (45) 11 (100) < 0.05
Pack-years (in current and former smokers) 8.1 ± 16.4 40.2 ± 13.0 < 0.05
Onset of symptoms (age) 15 ± 14 53 ± 10 < 0.05
Duration of symptomatic illness (yr) 21 ± 3 4 ± 11 < 0.05
Atopy n (%) 7 (78) 1 (9) < 0.05
PC20 (mg/ml) 3.7 ± 5.8 10.7 ± 7.8 < 0.05
FEV1 %pred 80 ± 19 73 ± 20 NS
FVC %pred 100 ± 14 102 ± 25 NS
FEV1 %FVC 66 ± 9 58 ± 5 < 0.05
RV %pred 132 ± 23 158 ± 40 NS
DLCO %pred 84 ± 15 60 ± 18 < 0.05