Table 1 Sample characteristics at baseline
Baseline characteristic | Full sample (n = 905) | Intervention group (n = 477) | Control group (n = 428) |
|---|---|---|---|
Age in yearsa, M (SD) | 42.8 (12.7) | 42.5 (12.8) | 43.3 (12.6) |
Gendera, n (%) | |||
Female | 442 (48.8) | 235 (49.3) | 207 (48.4) |
Male | 462 (51.0) | 241 (50.5) | 221 (51.6) |
Non-binary | 1 (0.1) | 1 (0.2) | - |
German nationalityb, n (%) | 873 (96.5) | 459 (96.2) | 414 (96.7) |
Educationa,c, n (%) | |||
Low | 163 (18.0) | 88 (18.4) | 75 (17.5) |
Middle | 261 (28.8) | 137 (28.7) | 124 (29.0) |
High | 481 (53.1) | 252 (52.8) | 229 (53.5) |
Employment status, n (%) | |||
Unemployed | 171 (18.9) | 99 (20.8) | 72 (16.8) |
Casual | 30 (3.3) | 16 (3.4) | 14 (3.3) |
Part time | 178 (19.7) | 83 (17.4) | 95 (22.2) |
Full time | 526 (58.1) | 279 (58.5) | 247 (57.7) |
Marital status, n (%) | |||
Single | 373 (41.2) | 212 (44.4) | 161 (37.6) |
Married/Registered civil partnership | 389 (43.0) | 188 (39.4) | 201 (47.0) |
Divorced | 132 (14.6) | 72 (15.1) | 60 (14.0) |
Widowed | 11 (1.2) | 5 (1.0) | 6 (1.4) |
Living with a smoking partnerb, n (%) | 283 (31.3) | 144 (30.2) | 139 (32.5) |
Living with other smokers in a householdb, n (%) | 103 (11.4) | 55 (11.5) | 48 (11.2) |
Years of smoking, M (SD) | 23.4 (12.9) | 23.6 (13.3) | 23.2 (12.5) |
Cigarettes smoked per daya, M (SD) | 16.2 (7.7) | 16.3 (8.1) | 16.1 (7.4) |
Nicotine dependencec, M (SD) | 3.9 (2.0) | 4.0 (2.1) | 3.8 (1.9) |
Number of quit attempts in the past, n (%) | |||
None | 95 (10.5) | 48 (10.1) | 47 (11.0) |
One | 93 (10.3) | 41 (8.6) | 52 (12.1) |
Two | 211 (23.3) | 105 (22.0) | 106 (24.8) |
Three | 175 (19.3) | 95 (19.9) | 80 (18.7) |
Four | 82 (9.1) | 48 (10.1) | 34 (7.9) |
Five or more | 249 (27.5) | 140 (29.4) | 109 (25.5) |
Last quit attemptd, n (%) | |||
Last week | 22 (2.7) | 9 (2.1) | 13 (3.4) |
2—3 weeks ago | 53 (6.5) | 25 (5.8) | 28 (7.3) |
More than 4 weeks ago | 126 (15.6) | 74 (17.2) | 52 (13.6) |
More than half a year ago | 180 (22.2) | 99 (23.1) | 81 (21.3) |
More than a year ago | 429 (53.0) | 222 (51.7) | 207 (54.3) |
Use of smoking cessation aids in attempt to quit/stay quitb,d, n (%) | 389 (48.0) | 213 (49.7) | 176 (46.2) |
Importance to quite, M (SD) | 86.6 (19.8) | 86.5 (20.5) | 86.8 (18.9) |
Confidence to quite, M (SD) | 60.8 (23.7) | 60.3 (23.4) | 61.3 (24.0) |
Suffering from chronic respiratory illnessb, n (%) | 145 (16.0) | 75 (15.7) | 70 (16.4) |