Table 3 Characteristics of participants
Control participants N (%) | Intervention participants N (%) | Total participants N (%) | Missing N | |
|---|---|---|---|---|
Total | 1151 (49.5) | 1172 (50.5) | 2323 (100.0) | 0 / 2323 |
Sex (male) | 566 (49.2) | 582 (49.7) | 1148 (49.4) | 0 / 2323 |
Age groups (years) | ||||
30–34 | 212 (18.4) | 221 (18.9) | 433 (18.6) | 0 / 2323 |
35–39 | 273 (23.7) | 306 (26.1) | 579 (24.9) | |
40–44 | 322 (28.0) | 307 (26.2) | 629 (27.1) | |
45–50 | 344 (29.9) | 338 (28.8) | 682 (29.4) | |
Smoking status | ||||
Current smoker | 257 (23.0) | 264 (23.2) | 521 (23.1) | 70 / 2323 |
Never smoke | 601 (53.9) | 631 (55.4) | 1232 (54.7) | |
Ex-smoker | 257 (23.0) | 243 (21.4) | 500 (22.2) | |
Lung symptoms | ||||
All of the time | 9 (0.8) | 11 (1.0) | 20 (0.9) | 38 / 2323 |
Most of the time | 33 (2.9) | 27 (2.3) | 60 (2.6) | |
Now and then | 115 (10.2) | 115 (9.9) | 230 (10.1) | |
Rarely | 332 (29.4) | 330 (28.5) | 662 (29.0) | |
Not at all | 639 (56.6) | 674 (58.3) | 1313 (57.5) | |
Risk profilea | ||||
No risk | 872 (75.8) | 888 (75.8) | 1760 (75.8) | 0 / 2323 |
Risk | 279 (24.2) | 284 (24.2) | 563 (24.2) | |
Lung functionb | ||||
FEV1/FVC < 0.70 | 147 (13.2) | 147 (13.0) | 298 (13.1) | 79 / 2323 |
Income, 1000 DKK | ||||
Low (0–207) | 307 (26.7) | 299 (25.5) | 606 (26.1) | 0 / 2323 |
Middle (208–273) | 363 (31.5) | 406 (34.6) | 769 (33.1) | |
High (274-?) | 481 (41.8) | 467 (39.8) | 948 (40.8) | |
Education (years) | ||||
0–10 (low) | 139 (12.3) | 155 (13.5) | 294 (12.9) | 40 / 2323 |
11–15 (medium) | 607 (53.6) | 574 (49.9) | 1181 (51.7) | |
16+ (high) | 387 (34.2) | 421 (36.6) | 808 (35.4) | |
Occupational status | ||||
Employed | 946 (82.2) | 971 (82.8) | 1917 (82.5) | 0 / 2323 |
Self-employed | 50 (4.3) | 51 (4.4) | 101 (4.3) | |
Unemployed/benefits | 27 (2.3) | 21 (1.8) | 48 (2.1) | |
Social welfare | 113 (9.8) | 118 (10.1) | 231 (9.9) | |
Othersc | 15 (1.3) | 11 (0.9) | 26 (1.1) | |
Medicined | ||||
Yes | 93 (8.1) | 90 (7.7) | 183 (7.9) | 0 / 2323 |