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