Table 1. Baseline characteristics of never, former and current smokers, CoLaus study, Lausanne, Switzerland.
| Baseline smoking status | Never | Former | Current | P-value |
|---|---|---|---|---|
| N | 1653 | 1373 | 973 | |
| Sex (male) | 637 (38.5) | 707 (51.2) | 457 (47.0) | <0.001 |
| Age categories | <0.001 | |||
| [35–44] | 557 (33.7) | 340 (24.8) | 347 (35.7) | |
| [45–54] | 447 (27.0) | 437 (31.8) | 337 (34.6) | |
| [55–64] | 441 (26.7) | 399 (29.1) | 221 (22.7) | |
| [65–75] | 208 (12.6) | 197 (14.3) | 68 (7.0) | |
| Education level | <0.001 | |||
| University | 389 (23.5) | 324 (23.6) | 180 (18.5) | |
| High school | 443 (26.8) | 384 (28.0) | 252 (25.9) | |
| Apprenticeship | 557 (33.7) | 507 (36.9) | 368 (37.8) | |
| Primary level | 264 (16.0) | 158 (11.5) | 173 (17.8) | |
| Born in Switzerland | 1069 (64.7) | 905 (65.9) | 606 (62.3) | 0.191 |
| Marital status (in couple) | 1136 (68.7) | 989 (72.0) | 609 (62.6) | <0.001 |
| Personal history | ||||
| Cardiovascular disease | 63 (3.8) | 100 (7.3) | 34 (3.5) | <0.001 |
| Lung disease | 178 (10.8) | 164 (11.9) | 124 (12.7) | 0.287 |
| Family history | ||||
| Cardiovascular disease | 625 (37.8) | 575 (41.9) | 339 (34.8) | 0.002 |
| Lung disease | 405 (24.5) | 369 (26.9) | 228 (23.4) | 0.132 |
| Hypertension | 506 (30.6) | 490 (35.7) | 247 (25.4) | <0.001 |
| Body mass index categories | <0.001 | |||
| Normal | 908 (54.9) | 630 (45.9) | 539 (55.4) | |
| Overweight | 540 (32.7) | 534 (38.9) | 339 (34.8) | |
| Obese | 205 (12.4) | 209 (15.2) | 95 (9.8) | |
| Dyslipidaemia | 557 (33.7) | 558 (40.7) | 3 89 (40.0) | <0.001 |
| Diabetes | 58 (3.5) | 90 (6.5) | 40 (4.1) | <0.001 |
| Alcohol drinker | 120 (67.8) | 1098 (80.0) | 784 (80.6) | <0.001 |
| Physically active | 982 (59.4) | 823 (59.9) | 460 (47.3) | <0.001 |
| Anxiety, self-reported | 123 (7.4) | 112 (8.2) | 101 (10.4) | 0.030 |
| Depression, self-reported | 220 (13.3) | 232 (16.9) | 191 (19.6) | <0.001 |
| Sensitivity analyses | ||||
| Child aged <5 years | 137 (14.1) | 82 (10.2) | 65 (12.5) | 0.048 |
| Diagnosed psychiatric diseases | 729 (44.1) | 790 (57.5) | 698 (71.7) | |
| Substance use, ever | 39 (2.4) | 154 (11.2) | 171 (17.6) | <0.001 |
| Anxiety, ever | 251 (15.2) | 246 (17.9) | 186 (19.1) | 0.109 |
| Depression, ever | 439 (26.6) | 390 (28.4) | 341 (35.0) | 0.006 |
Results are expressed as number of participants (percentage) for categorical data. Between-group comparisons using chi-square test.