Table 1 Socio-demographic and work-related characteristics of 980 male subway drivers
Characteristics | Classification | N (total = 980) | % |
|---|---|---|---|
Age, year | 20-29 | 24 | 2.4 |
| Â | 30-39 | 193 | 19.7 |
| Â | 40-49 | 640 | 65.3 |
|  | ≥ 50 | 123 | 12.6 |
Education | High school | 178 | 18.2 |
| Â | Junior college | 308 | 31.4 |
| Â | Above college | 494 | 50.4 |
Marital status | Unmarried | 122 | 12.2 |
| Â | Married | 837 | 85.4 |
| Â | Divorced/separated/bereaved | 23 | 2.3 |
Family income, US dollar/month | < 2,000 | 5 | 0.5 |
2000-2999 | 114 | 11.6 | |
| Â | 3000-3999 | 495 | 50.5 |
| Â | 4000-4999 | 221 | 22.6 |
|  | ≥ 5000 | 145 | 14.8 |
Years of driving | < 1 | 40 | 4.1 |
| Â | 1-4 | 56 | 5.7 |
| Â | 5-9 | 193 | 19.7 |
| Â | 10-19 | 575 | 58.7 |
| Â | 20-29 | 76 | 7.8 |
|  | ≥ 30 | 40 | 4.1 |