| Sample attributes | Number of the samples | % |
| Gender | Male | 438 | 58.2 | Female | 315 | 41.8 |
| Age | 20’s | 169 | 22.4 | 30’s | 174 | 23.1 | 40’s | 176 | 23.4 | 50’s | 146 | 19.4 | 60’s | 88 | 11.7 |
| Job | Professional/technical worker | 156 | 20.7 | Administrative/office worker | 381 | 50.6 | Service worker | 56 | 7.4 | Production worker | 38 | 5.0 | Self-employed worker | 76 | 10.2 | Student | 46 | 6.1 |
| Education | High school | 87 | 11.6 | University or higher | 666 | 88.4 |
| Household size | 1 | 100 | 13.3 | 2 | 119 | 15.8 | 3 | 208 | 27.6 | 4 | 265 | 35.2 | 5 and above | 61 | 8.1 |
| Household income | Under 2,000,000 KRW∗ | 53 | 7.0 | 2,000,000∼2,999,999 KRW | 129 | 17.1 | 3,000000∼4,999,999 KRW | 242 | 32.1 | 5,000,000∼6,999,999 KRW | 176 | 23.4 | 7,000,000∼9,999,999 KRW | 106 | 14.1 | 10,000,000 KRW and above | 47 | 6.2 |
| Population | 600,000 and above | 290 | 38.5 | 300,000∼599,999 | 197 | 26.2 | Under 300,000 | 220 | 29.2 | County area | 46 | 6.1 |
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