| Personal characteristics | Sex | male | 4,710 | 46.6 |
| female | 5,400 | 53.4 |
| Age | continuous variable (Year of birth) | 1971.6(average) |
| The degree of education | elementary school | 658 | 6.5 |
| middle school | 894 | 8.8 |
| high school | 3,900 | 38.6 |
| university(less than 4 years) | 1,798 | 17.8 |
| university(more than 4 years) | 2,776 | 27.5 |
| graduate school(Master’s) | 78 | 0.8 |
| graduate school(Ph.D.) | 6 | 0.1 |
| Marriage status | single | 2,528 | 25.0 |
| married | 6,306 | 62.4 |
| others(divorce, bereavement) | 1,276 | 12.6 |
| Residence | city | 8,020 | 79.3 |
| village | 2,090 | 20.7 |
| Child status | no | 4,401 | 43.5 |
| yes | 5,709 | 56.5 |
| Job status | yes | 6,650 | 65.8 |
| no | 3,460 | 34.2 |
| House hold Characteristics | Average monthly household income | 1st quartile (bottom 25%) | 2,993 | 29.6 |
| 2nd quartile | 2,083 | 20.6 |
| 3rd quartile | 2,112 | 20.9 |
| 4th quartile (top 25%) | 2,922 | 28.9 |
| Single-person household status | two or more households | 8,581 | 84.9 |
| single-person | 1,529 | 15.1 |