Odds ratio (95% CI) of support for a total smoking ban in outdoor areas of public places, ITC Korea Survey Wave 2 (2008) and Wave 3 (2010)
| Restaurants or cafes (n=2628) | Drinking establishments (n=2615) | |
| Notice anti-smoking advertising or information | ||
| No | 1.00 | 1.00 |
| Yes | 0.82 (0.56 to 1.19) | 0.90 (0.57 to 1.42) |
| Smoke is dangerous to non-smokers | ||
| Do not agree/neither agree nor disagree | 1.00 | 1.00 |
| Strongly agree or agree | 1.56 (0.87 to 2.80) | 1.00 (0.51 to 1.94) |
| Age (years) | ||
| 18–24 | 1.00 | 1.00 |
| 25–39 | 1.55 (0.57 to 4.22) | 1.31 (0.32 to 5.41) |
| 40–54 | 2.02 (0.68 to 6.03) | 2.30 (0.51 to 10.39) |
| 55+ | 2.08 (0.70 to 6.20) | 3.26 (0.70 to 15.14) |
| Gender | ||
| Male | 1.00 | 1.00 |
| Female | 0.68 (0.28 to 1.67) | 0.79 (0.30 to 2.03) |
| Marital status | ||
| Married | 1.00 | 1.00 |
| Never married | 1.28 (0.70 to 2.37) | 1.04 (0.46 to 2.35) |
| Others | 1.97 (1.12 to 3.45)* | 1.63 (0.92 to 2.90) |
| Educational attainment | ||
| Middle school or less | 1.00 | 1.00 |
| High school | 0.93 (0.58 to 1.51) | 0.76 (0.43 to 1.35) |
| College or more | 0.65 (0.36 to 1.18) | 0.64 (0.33 to 1.23) |
| Household equivalent income† | ||
| Low | 1.00 | 1.00 |
| Middle | 1.07 (0.67 to 1.70) | 0.92 (0.51 to 1.67) |
| High | 1.11 (0.69 to 1.80) | 1.29 (0.75 to 2.22) |
| Cigarettes per day | ||
| 1–10 | 1.00 | 1.00 |
| 11–20 | 0.81 (0.55 to 1.17) | 0.91 (0.58 to 1.44) |
| 21+ | 0.90 (0.54 to 1.52) | 0.75 (0.38 to 1.47) |
| Total home smoking ban | ||
| No | 1.00 | 1.00 |
| Yes | 1.29 (0.89 to 1.89) | 1.29 (0.83 to 2.00) |
| Smoking restriction in automobile | ||
| No | 1.00 | 1.00 |
| Yes | 1.29 (0.82 to 2.03) | 1.58 (0.92 to 2.69) |
| Time-in-sample | ||
| Once | 1.00 | 1.00 |
| Twice | 0.79 (0.54 to 1.16) | 0.91 (0.59 to 1.40) |
| Thrice | 0.39 (0.20 to 0.77)* | 0.71 (0.34 to 1.50) |
| Survey year | ||
| 2008 | 1.00 | 1.00 |
| 2010 | 3.46 (2.33 to 5.11)* | 1.32 (0.87 to 2.00) |
*P value <0.05.
†Low: <30 000 000 won; middle: 30 000 000–44 999 000 won; high: ≥45 000 000 won.