Results of multivariate logistic regression models predicting support for total smoking ban in restaurants or bars
| Smokers | Non-smokers | |||
| % support total ban | OR (95% CI) | % support total ban | OR (95% CI) | |
| City | ||||
| Beijing | 24.5 | Referent | 33.8 | Referent |
| Shenyang | 27.6 | 1.37 (1.01 to 1.86) | 32.6 | 1.09 (0.65 to 1.83) |
| Shanghai | 15.7 | 0.73 (0.50 to 1.06) | 48.5 | 1.88 (0.94 to 3.76) |
| Changsha | 20.6 | 0.99 (0.67 to 1.46) | 37.0 | 1.47 (0.90 to 2.42) |
| Guangzhou | 20.2 | 0.94 (0.67 to 1.32) | 49.0 | 2.20 (1.23 to 3.96) |
| Yinchuan | 19.3 | 0.93 (0.66 to 1.32) | 41.3 | 1.52 (0.86 to 2.67) |
| Gender | ||||
| Male | 20.7 | Referent | 42.2 | Referent |
| Female | 37.6 | 1.61 (0.99 to 2.59) | 38.9 | 0.90 (0.68 to 1.18) |
| Age (years) | ||||
| 18–34 | 14.6 | Referent | 27.2 | Referent |
| 35–44 | 20.0 | 1.46 (0.95 to 2.25) | 36.5 | 1.62 (0.93 to 2.81) |
| 45–54 | 20.5 | 1.55 (1.06 to 2.26) | 39.5 | 1.83 (1.08 to 3.09) |
| 55 or older | 25.8 | 1.85 (1.19 to 2.90) | 48.4 | 2.33 (1.41 to 3.86) |
| Ethnic group | ||||
| Han | 21.2 | Referent | 40.8 | Referent |
| Others | 23.2 | 1.05 (0.62 to 1.78) | 32.9 | 0.63 (0.33 to 1.24) |
| Highest education | ||||
| Low | 27.4 | Referent | 43.5 | Referent |
| Medium | 21.2 | 0.85 (0.61 to 1.18) | 41.2 | 1.11 (0.67 to 1.86) |
| High | 18.5 | 0.70 (0.44 to 1.13) | 38.0 | 1.15 (0.62 to 2.14) |
| Household income | ||||
| Low | 22.7 | Referent | 41.7 | Referent |
| Medium | 22.5 | 0.99 (0.77 to 1.29) | 39.2 | 0.89 (0.58 to 1.36) |
| High | 18.8 | 0.94 (0.63 to 1.39) | 44.4 | 1.03 (0.62 to 1.69) |
| Don’t know | 20.2 | 1.01 (0.69 to 1.49) | 34.9 | 0.65 (0.31 to 1.36) |
| Believe smoking causes lung cancer in non-smokers from SHS | ||||
| No/don’t know | 17.3 | Referent | 32.8 | Referent |
| Yes | 24.6 | 1.56 (1.18 to 2.06) | 42.0 | 1.60 (1.11 to 2.31) |
| Self-reported smoking rules in indoor entertainment places that the respondents go most often | ||||
| No rules or restrictions | 15.5 | Referent | 32.2 | Referent |
| Smoking is allowed only in some indoor areas | 21.9 | 1.56 (1.18 to 2.07) | 33.0 | 1.05 (0.68 to 1.62) |
| Smoking is not allowed in any indoor areas | 39.6 | 3.23 (2.25 to 4.64) | 61.6 | 3.05 (2.04 to 4.57) |
| Others | 27.4 | 1.82 (1.43 to 2.30) | 47.8 | 1.98 (1.31 to 3.00) |
| Number of cigarettes smoked per day | ||||
| 1–10 | 25.6 | Referent | Not included in the model | |
| 11–20 | 19.7 | 0.76 (0.63 to 0.92) | ||
| 21–30 | 15.7 | 0.56 (0.38 to 0.84) | ||
| 31 or more | 19.4 | 0.80 (0.54 to 1.17) | ||
SHS, secondhand smoke.