Table 1 Demographic characteristics of survey participants in this study
Groups | Survey | National statistics | ||
|---|---|---|---|---|
(Person) | (%) | (Person) | (%) | |
Gender | ||||
 Male | 510 | 51.0 | 25,768,055 | 50.1 |
 Female | 490 | 49.0 | 25,654,452 | 49.9 |
Age | ||||
 20s | 208 | 20.8 | 6,925,447 | 19.7 |
 30s | 205 | 20.5 | 7,518,454 | 21.4 |
 40s | 242 | 24.2 | 8,570,005 | 24.3 |
 50s | 236 | 23.6 | 8,380,783 | 23.8 |
 Over 60 | 109 | 10.9 | 3,812,645 | 10.8 |
Family size | ||||
 1 | 84 | 8.4 | 5,618,677 | 28.6 |
 2 | 198 | 19.8 | 5,260,332 | 26.7 |
 3 | 285 | 28.5 | 4,178,641 | 21.2 |
 4 | 358 | 35.8 | 3,473,897 | 17.7 |
 Over 5 | 75 | 7.5 | 1,142,328 | 5.8 |