Table 1. Characteristics of study subjects in Okayama, Japan (2009).
| Total | |
| Mean age, years (SD) | 52.9 (16.6) |
| Mean BMI, kg/m2 (SD) | 22.4 (3.3) |
| Sex, n (%) | |
| Men | 886 (39.2) |
| Women | 1301 (57.6) |
| Missing | 73 (3.2) |
| Years of education, n (%) | |
| <12 years | 1095 (48.5) |
| 13–15 years | 462 (20.4) |
| ≥16 years | 578 (25.6) |
| Missing | 125 (5.5) |
| Family structure, n (%) | |
| One generation | 781 (34.6) |
| Two generations | 1046 (46.3) |
| Others | 352 (15.6) |
| Missing | 81 (3.6) |
| Self-rated health, n (%) | |
| Good | 1799 (79.6) |
| Poor | 392 (17.4) |
| Missing | 69 (3.1) |
| Mental status, n (%) | |
| Not depressed | 1690 (74.8) |
| Depressed | 498 (22.0) |
| Missing | 72 (3.2) |
| Trust of others in neighborhood, n (%) | |
| Low | 971 (43.0) |
| Mid | 872 (38.6) |
| High | 390 (17.3) |
| Missing | 27 (1.2) |
| Social participation, n (%) | |
| None | 1249 (55.3) |
| Bridging | 612 (27.1) |
| Bonding | 202 (8.9) |
| Missing | 197 (8.7) |
| Physical activity, n (%) | |
| Active | 1556 (68.8) |
| Inactive | 654 (28.9) |
| Missing | 50 (2.2) |
BMI = body mass index; SD = standard deviation.