Table 1.
Background characteristics of the study sample by sex
| Men (n=542) | Women (n=630) | All | ||
|---|---|---|---|---|
| Variables | N (%) | N (%) | Difference (p) | N (%) |
| Age groups | 0.001 | |||
| ≤ 40 years | 150 (27.7) | 197 (31.3) | 347 (29.6) | |
| > 40 ≤ 60 | 194 (35.8) | 276 (43.8) | 470 (40.1) | |
| > 60 years | 198 (36.5) | 157 (24.9) | 355 (30.3) | |
| Area of domicile | 0.21 | |||
| Gothenburg | 297 (54.8) | 369 (58.6) | 666 (56.8) | |
| Västra Götaland | 245 (45.2) | 261 (41.4) | 506 (43.2) | |
| Level of education | 0.001 | |||
| University | 238 (43.9) | 350 (55.6) | 588 (50.2) | |
| Lower than university | 304 (56.1) | 280 (44.4) | 584 (49.8) | |
| Current smoking status | 0.25 | |||
| Non-smokers | 264 (48.7) | 297 (47.1) | 561 (47.9) | |
| Ex-smokers | 199 (36.7) | 220 (34.9) | 419 (35.8) | |
| Smokers | 79 (14.6) | 113 (17.9) | 192 (16.4) | |
| Pack-years among current smokers | 0.84 | |||
| ≤ 10 years | 22 (27.8) | 29 (25.7) | 51 (26.6) | |
| > 10 <20 years | 5 (6.3) | 25 (22.1) | 30 (15.6) | |
| ≥ 20 years | 28 (35.4) | 36 (31.9) | 64 (33.3) | |
| Missing | 24 (30.4) | 23 (20.4) | 47 (24.5) | |
| Pack-years among ever smokers | 0.05 | |||
| ≤ 10 years | 113 (40.6) | 146 (43.8) | 259 (42.4) | |
| > 10 < 20 years | 38 (13.7) | 77 (23.1) | 115 (18.8) | |
| ≥ 20 years | 82 (29.5) | 65 (19.5) | 147 (24.1) | |
| Missing | 45 (16.2) | 45 (13.5) | 90 (14.7) | |
| Exposure to occupational dust, gas or fumes | 0.001 | |||
| No | 344 (63.5) | 532 (84.4) | 876 (74.7) | |
| Yes | 195 (36.0) | 93 (14.8) | 288 (24.6) | |
| Unknown | 3 (0.6) | 5 (0.8) | 8 (0.7) |
Difference (p-value) between men and women.
Bold values indicate significant differences.