Table 1.
Clinical Characteristics of Subjects
| Total (n = 10) | Nonsmoker (n = 4) | Current Smoker (n = 6) | P Value | |
|---|---|---|---|---|
| Age, yr | 52 ± 7 | 56 ± 7 | 50 ± 5 | 0.165 |
| Male sex | 5 (50%) | 2 (50%) | 3 (50%) | 1.000 |
| White race | 6 (60%) | 2 (50%) | 4 (67%) | 0.598 |
| Pack-years | 21 ± 19 | 2 ± 2 | 35 ± 10 | <0.0001 |
| FEV1 post-BD, L | 2.98 ± 0.59 | 2.85 ± 0.77 | 3.11 ± 0.54 | 0.597 |
| FEV1 post-BD, % | 96 ± 11 | 97 ± 11 | 95 ± 13 | 0.777 |
| FVC post-BD, L | 3.75 ± 0.85 | 3.48 ± 1.0 | 4.12 ± 0.55 | 0.364 |
| FVC post-BD, % | 94 ± 11 | 94 ± 14 | 95 ± 9 | 0.892 |
| FEV1/FVC | 0.81 ± 0.03 | 0.82 ± 0.02 | 0.80 ± 0.03 | 0.337 |
Definition of abbreviation: BD = bronchodilator.
Data expressed as means ± SD or n (%). Independent Student’s t test was used to compare means for continuous variables, and χ2 test was used for categorical variables.