Clinical characteristics of subjects who underwent resection
| Healthy smokers(n = 5) | COPD(n = 5) | p value | |
|---|---|---|---|
| Values are expressed as mean (range) or as absolute numbers. | |||
| COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 second; pack-year, smoking one pack per day for 1 year. | |||
| The Mann-Whitney U test was used for differences in age, FEV1 and pack-years between groups. Fisher’s exact test was used to detect significant differences in sex. | |||
| Age (years) | 58 (49–63) | 60 (50–70) | 0.421 |
| Sex (M/F) | 3/2 | 4/1 | 1.00 |
| FEV1 (% predicted) | 94 (88–118) | 20 (15–26) | 0.008 |
| Pack-years | 28 (10–50) | 40 (30–60) | 0.111 |