Table 1.
The characteristics of the study group (n = 200).
| Variable | Mean (SD) | Median (quartiles) | ||
|---|---|---|---|---|
| Age (years) | 57.7 (16) | 60 (48–68) | ||
| Variable | n | % | ||
| Gender | Men | 105 | 52.50 | |
| Women | 95 | 47.50 | ||
| Place of living | In the city | 123 | 61.50 | |
| Rural area | 75 | 37.50 | ||
| Missing data | 2 | 1.00 | ||
| Education | Primary | 33 | 16.50 | |
| Vocational | 52 | 26.00 | ||
| Secondary | 56 | 28.00 | ||
| University | 59 | 29.50 | ||
| Professional activity | Employed | 77 | 38.50 | |
| Unemployed | 19 | 9.50 | ||
| Pensioner | 56 | 28.00 | ||
| Disability pensioner | 46 | 23.00 | ||
| Missing data | 2 | 1.00 | ||
| Smoking status | Smokers | 55 | 27.50 | |
| Non-smokers | 69 | 34.50 | ||
| Past smokers | 76 | 38.00 | ||
| Comorbidities | No comorbidities | 81 | 40.50 | |
| One coexisting disease | 88 | 44.00 | ||
| Two or more coexisting diseases | 29 | 14.50 | ||
| Pulmonary diseases | COPD | 52 | 26 | |
| Asthma | 72 | 36 | ||
| Obstructive sleep apnoea | 38 | 19 | ||
| Pneumonia or bronchitis (e.g. BOOP) | 17 | 8.5 | ||
| Bronchiectasis | 5 | 2.5 | ||
| Interstitial lung disease | 6 | 3 | ||
| Obstructive pulmonary symptoms | 10 | 5 | ||