Table 1.
Summary of Subject Demographics, Smoking History, and Spirometry
| Group | Smoker | COPD | P Value |
|---|---|---|---|
| Subjects, n | 19 | 30 | — |
| Sex: M, F | 16, 3 | 25, 5 | NS |
| Age, yr | 67 (7) | 65 (6) | NS |
| Smoking, pack-years | 55 (39) | 61 (28) | NS |
| Smoking status: active, former | 4, 15 | 14, 16 | NS |
| FEV1, % pred | 94 (13) | 77 (21) | 0.004 |
| DlCO, % pred | 94 (16) | 76 (21) | 0.002 |
| ICS usage: yes, no | 1, 18 | 10, 20 | 0.03 |
| Cancer diagnosis: NSCLC, other, no cancer | 14, 2, 0* | 24, 1, 4* | NS |
Definition of abbreviations: % pred = percentage of the predicted value; COPD = chronic obstructive pulmonary disease; ICS = inhaled corticosteroids; NS = not significant; NSCLC = non–small cell lung carcinoma.
Data are presented as mean (SD), except where otherwise noted.
*
Cancer diagnosis is missing for some individuals.