Table 1 Characteristics of participants from two work places in Japan (N = 50)
|  | A manufacturing company (n = 36) | A private psychiatric hospital (n = 14) | Total (N = 50) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | n | (%) | Mean | SD | n | (%) | Mean | SD | n | (%) | Mean | SD |
Gender | ||||||||||||
 Male | 34 | (94.4) |  |  | 8 | (57.1) |  |  | 42 | (84.0) |  |  |
 Female | 2 | (5.6) |  |  | 6 | (42.9) |  |  | 8 | (16.0) |  |  |
Age (Years) | Â | Â | 49.4 | 6.2 | Â | Â | 38.4 | 8.7 | Â | Â | 46.3 | 8.5 |
Educational attainment | ||||||||||||
 University or higher | 13 | (36.1) |  |  | 8 | (57.1) |  |  | 21 | (42.0) |  |  |
 High school or some college | 23 | (63.9) |  |  | 6 | (42.9) |  |  | 29 | (58.0) |  |  |
Marital status | ||||||||||||
 Married | 29 | (80.6) |  |  | 11 | (78.6) |  |  | 40 | (80.0) |  |  |
 Not married | 7 | (19.4) |  |  | 3 | (21.4) |  |  | 10 | (20.0) |  |  |
Working hours per weeka | Â | Â | 45.4 | 6.0 | Â | Â | 47.9 | 5.5 | Â | Â | 45.9 | 5.9 |