Demographic data (n=98)
| Variables | n (%) or mean (SD) |
| Sex, female, n (%) | 18 (18.4) |
| Age, mean (SD) | 45.3 (9.3) |
| One-way commute time (min), mean (SD) | 57.0 (57.8) |
| Body mass index, mean (SD) | 24.1 (5.2) |
| Number of employees, n (%) | |
| <20 | 8 (8.2) |
| 20–300 | 26 (26.5) |
| ≥300 | 64 (65.3) |
| Marital status, n (%) | |
| Single | 36 (36.7) |
| Married | 62 (63.3) |
| Number of people living together, n (%) | |
| 0 | 24 (24.5) |
| ≥1 | 74 (75.5) |
| Smoking status, n (%) | |
| Smoker | 18 (18.4) |
| Non-smoker (ex-smoker) | 80 (81.6) |
| Alcohol status, n (%) | |
| Non-consumption | 40 (40.8) |
| ≥1/week | 58 (59.2) |
| Occupation, n (%) | |
| Managerial workers | 24 (24.5) |
| Professional/technical job | 52 (53.1) |
| Others | 22 (22.4) |