TABLE 1.
Demographic characteristics of the participants
| n (%) | |
|---|---|
| Sex | |
| Men | 13 814 (51.1) |
| Women | 13 222 (48.9) |
| Age (y) | |
| 20‐29 | 1905 (7.0) |
| 30‐39 | 4858 (18.0) |
| 40‐49 | 8011 (29.6) |
| 50‐59 | 9012 (33.2) |
| 60‐65 | 3250 (12.0) |
| Geographical region of workplace | |
| Hokkaido | 695 (2.6) |
| Tohoku | 2346 (8.7) |
| Kanto | 6322 (23.3) |
| Chubu | 4894 (18.1) |
| Kansai | 3180 (11.8) |
| Chugoku and Shikoku | 3379 (12.5) |
| Kyushu and Okinawa | 2305 (8.5) |
| Unknown | 3915 (14.5) |
| Job type | |
| Desk work | 13 468 (49.8) |
| Work involving communicating with people | 6927 (25.6) |
| Manual work | 6641 (24.6) |
| Company size (number of employees) | |
| 1‐9 | 6165 (22.8) |
| 10‐49 | 4390 (16.2) |
| 50‐999 | 9703 (35.9) |
| ≥1000 | 6778 (25.1) |