Table 1.
Characteristics of the study population. Values are number (proportion) or mean (SD); OAD = obstructive airway disease; COPD = Chronic obstructive airway disease (n = 219)
|
Overall n (%) |
Asthma n (%) |
COPD n (%) |
No OAD n (%) |
|
| n | 219 (100) | 90 (100) | 50 (100) | 79 (100) |
| Female | 127 (57.7) | 55 (61.1) | 26 (54.1) | 46 (58.2) |
| Obesity | 30 (13.7) | 8 (8.9) | 10 (20.0) | 12 (15.2) |
| Age (mean in years [sd]) | 43.8 [15.6] | 37.9 [14.4] | 56.9 [11.5] | 42.1 [14.4] |
| Do you sometimes suffer from shortness of breath? (yes) | 135 (61.4) | 55 (61.1) | 39 (76.3) | 41 (51.9) |
| Have you suffered from wheezing in your chest? (yes) | 108 (49.1) | 47 (52.2) | 30 (63.2) | 30 (38.0) |
| Do you often suffer from a cough? (yes) | 126 (57.3) | 39 (43.3) | 32 (65.8) | 55 (69.6) |
| Do you often suffer from expectoration? (yes) | 74 (33.6) | 22 (24.4) | 20 (36.8) | 32 (40.5) |
| Have you been woken up with a feeling of tightness in your chest? (yes) | 49 (22.3) | 27 (30.0) | 9 (10.5) | 13 (16.5) |
| Have you been woken up by an attack of shortness of breath? (yes) | 48 (21.8) | 24 (26.7) | 10 (18.4) | 14 (17.7) |
| Have you suffered an asthma attack? (yes) | 14 (6.4) | 11 (12.2) | 2 (2.6) | 1 (1.3) |
| Do you suffer from any nasal allergies? (yes) | 92 (41.8) | 44 (48.9) | 14 (31.6) | 34 (43.0) |
| Do you often suffer from a common cold? (yes) | 73 (33.2) | 18 (20.0) | 18 (26.3) | 37 (46.8) |
| Do you smoke or did you smoke? (yes) | 118 (53.4) | 35 (38.9) | 43 (86.8) | 39 (49.4) |
| How much do/did you smoke? (mean in pack year [SD]) | 11.6 [17.7] | 6.6 [12.9] | 28.8 [21.7] | 6.4 [11.9] |