Table 1. Demographic characteristics according to employment category of 43,865 people (21,649 men and 22,216 women).
| Men | Women | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unemployed | Not in the labor force | Regularly employed | Non-regularly employed | Self-employed | Others | p | Unemployed | Not in the labor force | Regularly employed | Non-regularly employed | Self-employed | Others | p | ||
| N | 1,075 | 341 | 15,056 | 2,083 | 2,808 | 286 | 3,483 | 2,581 | 6,853 | 7,087 | 1,729 | 483 | |||
| Age of persons | |||||||||||||||
| 20–29 | 34.8 | 47.5 | 16.0 | 39.8 | 7.1 | 20.6 | <0.0001 | 16.9 | 8.8 | 27.5 | 16.4 | 7.0 | 12.8 | <0.0001 | |
| 30–39 | 16.3 | 7.9 | 28.8 | 23.7 | 23.0 | 22.4 | 36.0 | 21.2 | 27.4 | 25.0 | 20.5 | 23.4 | |||
| 40–49 | 19.1 | 10.0 | 28.3 | 14.8 | 30.4 | 24.1 | 26.0 | 21.3 | 23.8 | 30.6 | 29.2 | 30.2 | |||
| 50–59 | 29.9 | 34.6 | 26.9 | 21.7 | 39.5 | 32.9 | 21.1 | 48.7 | 21.4 | 28.0 | 43.3 | 33.5 | |||
| Marital status | |||||||||||||||
| Married | 27.4 | 17.6 | 69.8 | 30.1 | 74.5 | 52.8 | <0.0001 | 83.6 | 89.2 | 46.5 | 68.3 | 77.2 | 72.3 | <0.0001 | |
| Single | 65.8 | 76.0 | 27.2 | 64.5 | 21.3 | 42.3 | 11.0 | 7.4 | 43.9 | 22.4 | 14.3 | 22.0 | |||
| Divorced or widowed | 6.9 | 6.5 | 3.0 | 5.5 | 4.2 | 4.9 | 5.5 | 3.5 | 9.5 | 9.3 | 8.5 | 5.8 | |||
| Education level | |||||||||||||||
| Junior high school | 12.7 | 10.9 | 4.2 | 8.8 | 10.2 | 11.2 | <0.0001 | 5.6 | 6.6 | 2.3 | 4.9 | 5.3 | 7.3 | <0.0001 | |
| High school | 36.2 | 26.7 | 37.9 | 39.9 | 41.1 | 43.0 | 39.3 | 40.9 | 32.2 | 43.8 | 41.6 | 42.7 | |||
| Junior college or technical upper secondary school | 11.1 | 6.2 | 12.9 | 14.7 | 15.3 | 12.2 | 31.5 | 29.5 | 33.9 | 30.6 | 29.6 | 26.9 | |||
| University or graduate school | 34.1 | 49.9 | 37.1 | 29.4 | 23.2 | 25.9 | 16.9 | 16.9 | 23.5 | 13.0 | 13.0 | 14.5 | |||
| Mental illness | |||||||||||||||
| Yes | 7.3 | 6.5 | 1.2 | 1.3 | 0.7 | 2.4 | <0.0001 | 3.9 | 4.1 | 1.4 | 1.7 | 1.2 | 2.1 | <0.0001 | |
| No | 92.7 | 93.5 | 98.8 | 98.7 | 99.3 | 97.6 | 96.1 | 95.9 | 98.6 | 98.3 | 98.8 | 97.9 | |||
| Smoking status | |||||||||||||||
| Smoking 21 or more cigarettes per day | 8.7 | 2.4 | 9.2 | 7.1 | 13.6 | 7.0 | <0.0001 | 1.4 | 1.0 | 0.8 | 1.5 | 1.7 | 1.0 | <0.0001 | |
| Smoking 20 or less cigarettes per day | 27.8 | 18.2 | 30.4 | 32.3 | 27.0 | 30.3 | 12.9 | 7.9 | 12.3 | 13.9 | 12.3 | 12.0 | |||
| Non-smokers | 49.6 | 63.3 | 50.1 | 47.7 | 45.9 | 48.2 | 78.2 | 80.8 | 78.8 | 75.5 | 73.1 | 73.9 | |||
| Parental status | |||||||||||||||
| In need of long-term care | 5.4 | 9.7 | 0.3 | 1.1 | 0.4 | 4.5 | <0.0001 | 1.0 | 2.6 | 0.3 | 0.3 | 0.2 | 2.3 | <0.0001 | |
| Not in need of long-term care | 94.6 | 90.3 | 99.7 | 98.9 | 99.6 | 95.5 | 99.0 | 97.4 | 99.7 | 99.7 | 99.8 | 97.7 | |||
| Household expenditure* | |||||||||||||||
| Under 25 percentile | 40.7 | 37.5 | 13.8 | 25.9 | 17.1 | 23.1 | <0.0001 | 27.0 | 20.2 | 24.7 | 23.7 | 25.9 | 22.6 | <0.0001 | |
| 25 to 50 percentile | 26.6 | 23.5 | 32.9 | 31.6 | 30.9 | 33.6 | 27.2 | 22.4 | 21.7 | 23.2 | 21.8 | 22.2 | |||
| 50 to 75 percentile | 14.8 | 17.0 | 27.5 | 21.0 | 24.4 | 21.7 | 26.6 | 29.3 | 26.4 | 27.3 | 23.4 | 27.3 | |||
| 75 percentile or over | 11.3 | 15.3 | 20.8 | 16.0 | 21.4 | 16.4 | 14.9 | 23.0 | 21.9 | 20.3 | 22.7 | 21.5 | |||
| Insomnia related chronic diseases | |||||||||||||||
| With diseases | 9.5 | 10.6 | 8.7 | 5.4 | 8.5 | 7.0 | <0.0001 | 6.9 | 11.6 | 6.2 | 7.5 | 9.1 | 8.9 | <0.0001 | |
| Without diseases | 90.5 | 89.4 | 91.3 | 94.6 | 91.5 | 93.0 | 93.1 | 88.4 | 93.8 | 92.5 | 90.9 | 91.1 | |||
p values: χ2 test. *25 percentile (men; under 150,000 yen, women; under 170,000 yen), 25 to 50 percentile (men; 150,000 to 250,000 yen, women; 170,000 to 250,000 yen), 50 to 75 percentile (men; 250,000 to 335,000 yen, women; 250,000 to 350,000 yen) and 75 percentile (men; 335,000 yen, women; 350,000 yen) or over.