Number | 352 | 133 | 259 |
Age (y)‡ | 34.6 | 35.9 | 34.7 |
<35 | 137 (38.9%) | 43 (32.3%) | 108 (41.7%) |
35–44 | 162 (46.0%) | 80 (60.2%) | 126 (48.6%) |
⩾45 | 53 (15.1%) | 10 (7.5%) | 25 (9.7%) |
Smoking |
Never | 91 (25.9%) | 27 (20.3%) | 54 (20.8%) |
Former | 43 (12.2%) | 13 (9.8%) | 22 (8.5%) |
Current (<30 cigarettes/day) | 152 (43.2%) | 72 (54.1%) | 139 (53.7%) |
Current (⩾30 cigarettes/day) | 66 (18.8%) | 21 (15.8%) | 44 (17.0%) |
Alcohol drinking |
Never or occasional | 46 (13.1%) | 23 (17.3%) | 39 (15.1%) |
Habitual (<45 g ethanol/day) | 244 (69.3%) | 90 (67.7%) | 169 (65.3%) |
Habitual (⩾45 g ethanol/day) | 62 (17.6%) | 20 (15.0%) | 51 (19.7%) |
Body mass index (kg/m2)* | 22.6 (2.8) | 22.7 (2.7) | 22.2 (2.5) |
Education (% ⩾high school) | 71.3% | 62.4% | 63.7% |
Shift work (% shift workers) | 88.6% | 79.7% | 87.6% |
Coronary prone behaviour pattern (%) | 20.2% | 18.9% | 18.9% |
CS2 exposure duration prior to the study (yr)‡ | – | 10.9 (2.3) | 10.9 (2.3) |
CS2 concentration over the study period (ppm)‡ | – | 2.9 (1.8)† | 5.0 (1.8) |
TTCA over the study period (mg/g creatinine) ‡ | – | 1.3 (1.5)† | 1.6 (1.9) |