Table 2.
Baseline characteristics of the study population.
| Total (n = 1,029) | |
|---|---|
| Age, years | |
| 20–29 | 8 (0.8) |
| 30–39 | 22 (2.1) |
| 40–49 | 61 (5.9) |
| 50–59 | 240 (23.3) |
| 60–69 | 369 (35.9) |
| ≥70 | 329 (32.0) |
| Sex | |
| Male | 406 (39.5) |
| Female | 623 (60.5) |
| Type of insurance | |
| Self-employed health insurance | 959 (93.2) |
| Employee health insurance | 59 (5.7) |
| Medical aid | 11 (1.1) |
| CCI score | |
| 1 | 245 (23.8) |
| ≥2 | 784 (76.2) |
| Comorbidities | |
| COPD | 355 (34.5) |
| Asthma | 377 (36.6) |
| A history of pulmonary tuberculosis | 49 (4.8) |
| Cancer | 107 (10.4) |
| Hypertension | 426 (14.4) |
| Diabetes mellitus | 264 (25.7) |
| Dyslipidemia | 535 (52.0) |
| Cardiovascular disease | 156 (15.2) |
Values are presented as numbers (%). CCI, Charlson comorbidity index; COPD, chronic obstructive pulmonary disease.