Table 2.
Descriptive statistics for parents and households.
| Variables | Mean (SD) or proportion |
|---|---|
| Age of father | 46.8 (5.5) |
| Age of mother | 44.2 (4.4) |
| Education | |
| High school or lower | 30.4% |
| Junior college/vocational school | 27.0% |
| University or higher | 42.6% |
| Employment status | |
| Not in employment | 3.7% |
| Full-time or executives | 76.7% |
| Self-employment | 9.7% |
| Non-regular worker | 9.9% |
| Equalised household income (1 million JPY) | 300.0 (155.7) |
| Scale of residential area | |
| Designated cities by government ordinance | 22.0% |
| Population: 200,000 or more | 24.8% |
| Population: 100,000 or more | 17.3% |
| Population: less than 100,000 | 24.7% |
| Town or village | 11.1% |
| Residential area | |
| Hokkaido | 4.3% |
| Tohoku | 7.9% |
| Kanto | 28.2% |
| Hokuriku | 5.1% |
| Tozan | 5.1% |
| Tokai | 10.9% |
| Kinki | 15.5% |
| Chugoku | 6.7% |
| Shikoku | 3.5% |
| Kitakyushu | 7.1% |
| Minamikyushu | 5.7% |