TABLE 1.
Characteristics of total study population (N = 396) and the subgroups of patients with COPD (+/-asthma) and patients with asthma.
| Characteristics | N (% of total) or mean (±SD) of total study population(N = 396) | N (% of total 194) or mean (±SD) of patients with COPD (+/-asthma) (N = 194) | N (% of total 202) or mean (±SD) of patients with asthma(N = 202) | |
|---|---|---|---|---|
| Age | 63.1 (13.8) (%) | 69.2 (9.6) | 57.2 (14.7) | |
| Sex | Female | 55.8 | 47.9% | 63.4% |
| Male | 44.2 | 52.1% | 36.6% | |
| Ethnicity (Dutch) | Respondent | 94.9 | 94.8% | 95.0% |
| Mother | 93.7 | 94.3% | 93.1% | |
| Father | 94.9 | 96.9% | 93.1% | |
| Diagnosis | COPD only | 33.3 | 68% | - |
| Asthma only | 51.0 | - | 100% | |
| COPD and asthma | 15.7 | 32% | - | |
| Living environment | Urban total | 74.5 | 72.2% | 77.2% |
| Rural total | 25.3 | 27.8% | 22.7% | |
| Educational level | Lower education | 27.3 | 34.0% | 20.8% |
| Secondary vocational education | 36.1 | 39.7% | 32.7% | |
| Higher professional education | 36.3 | 26.3% | 46.5% | |