Table 1.
Basic characteristics of study subjects and regions.
| Men | Women | ||
| Individual variable (20030 men and 21076 women) | |||
| Age (mean, range: years) | 42.9 (25–59) | 42.9 (25–59) | |
| Marital status (N, %) | Married | 14701 (73.4) | 16208 (76.9) |
| Single | 4635 (23.1) | 3217 (15.3) | |
| Separated | 137 (0.7) | 541 (2.6) | |
| Divorced | 557 (2.8) | 1110 (5.3) | |
| Occupation a (N, %) | Profession | 3747 (18.7) | 2243 (10.6) |
| Manager | 1736 (8.7) | 310 (1.5) | |
| Clerk | 1776 (8.9) | 3051 (14.5) | |
| Sales work | 1972 (9.8) | 1785 (8.5) | |
| Service work | 1697 (8.5) | 2242 (10.6) | |
| Agriculture | 680 (3.4) | 535 (2.5) | |
| Transport | 1063 (5.3) | 80 (0.4) | |
| Labour | 4752 (23.7) | 2167 (10.3) | |
| Housework | 28 (0.1) | 5765 (27.4) | |
| Others | 2579 (12.9) | 2898 (13.8) | |
| Income quintile (median: thousand yen) | 5th (highest) | 6035 | |
| 4th | 4000 | ||
| 3rd | 2989 | ||
| 2nd | 2200 | ||
| 1st (lowest) | 1250 | ||
| Regional variable (60 prefectures and metropolitan cities) | |||
| Per capita income (mean, range: thousand yen) | 1423.4 (865–2042) | ||
| Unemployment rate (mean, range: %) | 4.68 (3.0–9.4) | ||
a Profession = professional and technical workers; clerk = clerical and related workers; agriculture = agriculture, foresty and fishery workers; labour = craftmen, mining, production process and construction workers, and labourers.