Variables | Categories | Crude OR* | 95% CI†| Adjusted OR‡ | 95% CI |
---|---|---|---|---|---|
Household income per year (1 million KRW) | <5 | 1 | Â | 1 | Â |
 | 5 – < 10 | 0.81 | 0.49–1.35 | 0.82 | 0.49–1.38 |
 | 10 – < 20 | 0.63 | 0.39–0.99 | 0.64 | 0.40–1.02 |
 | 20 – < 50 | 0.6 | 0.39–0.93 | 0.6 | 0.38–0.93 |
 | ≥50 | 0.55 | 0.35–0.86 | 0.54 | 0.34–0.86 |
Home value | <50 | 1 | Â | 1 | Â |
(1 million KRW) | 50 – < 100 | 1.08 | 0.79–1.47 | 1.11 | 0.81–1.52 |
 | 100 – < 200 | 0.9 | 0.66–1.22 | 0.92 | 0.68–1.25 |
 | 200 – < 500 | 0.86 | 0.63–1.17 | 0.89 | 0.65–1.21 |
 | ≥500 | 0.63 | 0.42–0.94 | 0.65 | 0.43–0.96 |
Education | ≥University | 1 |  | 1 |  |
 | ≤Elementary | 1.49 | 1.18–1.88 | 1.89 | 1.44–2.48 |
 | Middle | 1.34 | 1.04–1.71 | 1.57 | 1.20–2.05 |
 | High | 1.23 | 1.03–1.46 | 1.28 | 1.07–1.52 |
Occupation | Unemployed†| 1 |  | 1 |  |
 | Manager, professional, and administrators | 1.05 | 0.83–1.34 | 1.05 | 0.83–1.33 |
 | Clerks | 1.19 | 0.91–1.55 | 1.18 | 0.90–1.54 |
 | Service and sales workers | 1.07 | 0.85–1.35 | 1.08 | 0.86–1.36 |
 | Skilled agricultural, forestry, and fishery workers | 1.38 | 1.01–1.91 | 1.43 | 1.02–2.01 |
 | Craft, equipment, machine operating, and assembling workers | 1.96 | 1.58–2.44 | 1.99 | 1.60–2.47 |
 | Elementary workers | 1.35 | 1.02–1.78 | 1.38 | 1.04–1.82 |