Table 1.
Sample characteristics (n = 429).
| N (%) | ||
|---|---|---|
| Age | Total (median, IQR) | 55 (40, 67) |
| Missing | 4 | |
| 18–65 years old | 289 (67.4%) | |
| >65 years old | 140 (32.6%) | |
| Sex | Male | 199 (46.8%) |
| Female | 226 (53.2%) | |
| Missing | 4 | |
| Education level | Junior/high | 180 (43.2%) |
| Vocational | 90 (21.6%) | |
| University/graduate | 147 (35.3%) | |
| Missing | 12 | |
| Household income (JPY) | 0–<3 M | 100 (26.4%) |
| 3–<6 M | 122 (32.2%) | |
| 6–<10 M | 111 (29.3%) | |
| +10 M | 46 (12.1%) | |
| Missing | 50 | |
| Number of comorbidities | None | 125 (29.1%) |
| 1 | 170 (39.6%) | |
| +2 | 134 (31.2%) | |
| Depressive symptoms (K6 score) |
0–4 | 299 (70.2%) |
| 5–12 | 110 (25.8%) | |
| +13 | 17 (4.0%) | |
| Missing | 3 |
Abbreviations: JPY, Japanese yen.