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Study of population characteristics
| Baseline | 12 month-follow-up | |
|---|---|---|
| Number of patients | 68 | 51 |
| Age (years) | 24.94±7.68 | 25.92±8.45 |
| Sex | ||
| Men | 64 | 51 |
| Women | 4 | |
| Smoking habits, n (%) | ||
| Nonsmokers | 30 (44) | 14 (27) |
| Light smokers <10 pack-years | 16 (24) | 15 (30) |
| Heavy smokers >10 pack-years | 22 (32) | 22 (43) |
