Table 1.
Basic characteristics of the study population
| Parameter | COPD | Control | P-value |
|---|---|---|---|
| Number | 93 | 88 | |
| Age (years) | 63.9±7.29 | 62.7±5.29 | 0.232 |
| Gender (male %) | 77.4 | 78.4 | 0.873 |
| Body mass index (kg/m2) | 23.4±3.76 | 24.2±2.59 | 0.107 |
| Never smokers (%) | 32.3 | 37.5 | 0.459 |
| Smoking index (pack-years)* | 46.8±23.0 | 43.3±26.5 | 0.447 |
| Hypertension (%) | 18.3 | 15.9 | 0.672 |
| Course of disease (years) | 10 (4.5–13.5) | NA | |
| Hospitalization time (days) | 8 (7–11) | NA | |
| Medication | |||
| Inhaled bronchodilators (%) | 100 | 0 | NA |
| Inhaled corticosteroids (%) | 55.9 | 0 | NA |
Notes: Data are expressed as mean ± SD or percentage or median (interquartile range).
*
Includes current and former smokers.
Abbreviations: COPD, chronic obstructive pulmonary disease; NA, not applicable.