Table 1.
Anthropometric data, smoking behavior, and COPD GOLD classification of included patients.
| N (%) | Sex | Age | BMI | Smoker | |||||
|---|---|---|---|---|---|---|---|---|---|
| Female | Male | Mean | SD | Mean | SD | No | Yes | ||
| COPD all stages | 575 (100) | 222 | 352 | 61.2 | 9.0 | 26.8 | 5.5 | 401 | 163 |
| COPD I | 28 (4.9) | 10 | 18 | 63.0 | 10.5 | 26.6 | 6.2 | 23 | 5 |
| COPD II | 263 (45.7) | 107 | 155 | 61.1 | 9.3 | 27.9 | 5.2 | 186 | 73 |
| COPD III | 213 (37.0) | 82 | 131 | 61.9 | 8.6 | 26.1 | 5.2 | 142 | 66 |
| COPD IV | 71 (12.3) | 23 | 48 | 59.4 | 8.0 | 24.4 | 6.2 | 50 | 19 |
Legend: %: percent; SD: standard deviation; sex and age one missing value; missing for BMI (5 cases); missing date for smokers (11 cases) < 2%.