Table 2.
Characteristics of the study population
| Characteristics | Q-fever | COPD- | Healthy | Total | |||||
|---|---|---|---|---|---|---|---|---|---|
| Age <50 | >50 yrs | ||||||||
| N = 238 | (%) | N = 277 | (%) | N = 128 | (%) | N = 65 | (%) | N = 708 | |
| Gender | |||||||||
| Male | 140 | (58.8) | 166 | (59.9) | 86 | (67.2) | 47 | (72.3) | 439 |
| Female | 98 | (41.2) | 111 | (40.1) | 42 | (32.8) | 18 | (27.7) | 269 |
| Age | |||||||||
| Mean | 40.4 | 60.3 | 62.5 | 63.5 | 56.7 | ||||
| SD | 7.4 | 7.6 | 6.9 | 6.6 | |||||
| Current smoking | |||||||||
| Yes | 96 | (40.3) | 71 | (26.6) | 11 | (8.9) | 11 | (16.9) | 189 |
| No | 137 | (57.6) | 196 | (73.4) | 113 | (91.1) | 54 | (83.1) | 500 |
| Education-level | |||||||||
| Low | 56 | (23.5) | 97 | (35.5) | 62 | (50.4) | 20 | (30.8) | 235 |
| Average | 120 | (50.4) | 126 | (46.2) | 38 | (30.9) | 26 | (40.0) | 310 |
| High | 60 | (25.2) | 50 | (18.3) | 23 | (18.7) | 19 | (29.2) | 152 |
Q-fever patients younger and older than 50 years, Norm groups Chronic Obstructive Pulmonary Disease- and healthy individuals. Q-fever patients >50 currently smoke significantly more than COPD-controls. None of the other characteristics differ significantly (logistic regression).