Table 1.
Characteristics of the study group and control (x̅±s)
| Control | COPD GOLD stage 0 | |
|---|---|---|
| n | 46 | 48 |
| Sex (male/female) | 22/24 | 23/25 |
| Age (yr) | 46.71±10.09 | 47.54±14.21 |
| Height (cm) | 163.2±6.0 | 165.0±7.2 |
| Weight (kg) | 60.2±9.8 | 64.2±11.2 |
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