Table 1 Characteristics of Asthma-only and ACOS cases and population-based controls, the Finnish Environment and Asthma Study
Characteristic | Asthma-only (N = 365) | ACOS (N = 25) | Controls (N = 932) |
|---|---|---|---|
Gender | |||
Men, no. (%) | 120 (32.9)a | 17 (68.0) | 438 (47.0) |
Women, no. (%) | 245 (67.1)a | 8 (32.0)b | 494 (53.0) |
Age, years | |||
20–29, no. (%) | 87 (23.8) | 0 (0.0) | 141 (15.1) |
30–39, no. (%) | 80 (21.9) | 2 (8.0) | 224 (24.0) |
40–49, no. (%) | 85 (23.3) | 6 (24.0) | 254 (27.3) |
50–59, no. (%) | 88 (24.1) | 10 (40.0) | 240 (25.8) |
60–63, no. (%) | 25 (6.9) | 7 (28.0) | 73 (7.8) |
Education | |||
Other, no. (%) | 72 (19.7) | 10 (40.0) | 158 (17.0) |
Vocational course, no. (%) | 57 (15.6) | 8 (32.0) | 104 (11.2) |
Vocational institution, no. (%) | 109 (29.9) | 1 (4.0) | 271 (29.1) |
College-level education, no. (%) | 82 (22.5) | 3 (12.0) | 261 (28.0) |
University or corresponding, no. (%) | 45 (12.3) | 3 (12.0) | 138 (14.8) |
Parental asthma or allergyc,d, no. (%) | 128 (35.1) | 9 (36.0) | 204 (21.9) |
Smokinge | |||
Never, no. (%) | 180 (49.3) | 2 (8.0) | 485 (52.0) |
Former, no. (%) | 83 (22.7) | 7 (28.0) | 205 (22.0) |
Current, no. (%) | 100 (27.4) | 16 (64.0) | 240 (25.8) |
Second-hand smoke during past 12 months, at home or at work, no. (%) | 75 (20.6) | 8 (32.0) | 166 (20.6) |
Having pets at some point, no. (%) | 262 (71.8) | 15 (60.0) | 616 (66.1) |