Table 1.
Baseline demographic and spirometry parameters in chronic obstructive pulmonary disease patients and healthy controls
| Parameters | COPD group (n=70), n (%) | Controls group (n=70), n (%) | P |
|---|---|---|---|
| Age (years) | 55.78±9.8 | 53.5±12.31 | 0.325 |
| Male/female ratio | 53:17 | 50:20 | 0.568 |
| Height (cm) | 159.4±8.37 | 162.86±9.07 | 0.051 |
| Weight (kg) | 53.02±12.59 | 63.02±12.08 | 0.04 |
| BMI (kg/m2) | 20.37±4.21 | 24.34±4.25 | <0.001 |
| Smoker | 31 (44.3) | 25 (35.7) | |
| Ex-smoker | 25 (35.7) | 15 (21.4) | |
| Nonsmoker | 14 (20) | 30 (42.8) | |
| Stage 1 (mild) | 0 (0) | - | |
| Stage 2 (moderate) | 25 (35.7) | - | |
| Stage 3 (severe) | 36 (51.4) | - | |
| Stage 4 (very severe) | 9 (12.8) | - | |
| Post-FVC% | 64.02±17.09 | 88.8±9.0 | <0.001 |
| Post-FEV1/FVC | 56.29±10.3 | 81.4±8.1 | <0.001 |
| Post-FEV1 (%) predicted | 45.14±15.3 | 90.18+8.09 | <0.001 |
Results are expressed as mean±SD or percentages depending on the distribution. P<0.05 considered significant. COPD: Chronic obstructive pulmonary disease, FVC: Forced vital capacity, FEV1: Forced expiratory volume in 1 s, BMI: Body mass index, SD: Standard deviation