Demographic characteristics of those smoking in recreational venues vs those not smoking in those venues
| Variables | Smoking | Not smoking | Test of significance |
| No (%) | No (%) | ||
| Total | 2403 (83.6) | 472 (16.4) | |
| Region | |||
| Beijing | 294 (75.4) | 96 (24.6) | |
| Shenyang | 385 (87.7) | 54 (12.3) | |
| Shanghai | 460 (87.1) | 68 (12.9) | |
| Changsha | 387 (83.4) | 77 (16.6) | |
| Guangzhou | 484 (84.3) | 90 (15.7) | |
| Yinchuan | 393 (81.9) | 87 (18.1) | χ2(5)=30.60, p<0.001 |
| Gender | |||
| Male | 2342 (84.0) | 446 (16.0) | |
| Female | 61 (70.1) | 26 (29.9) | χ2(1)=11.86, p=0.001 |
| Age | |||
| 18–24 | 49 (87.5) | 7 (12.5) | |
| 25–39 | 515 (83.5) | 102 (16.5) | |
| 40–54 | 1290 (87.3) | 187 (12.7) | |
| 55+ | 549 (75.7) | 176 (24.3) | χ2(3)=48.45, p<0.001 |
| Ethnicity | |||
| Han nationality | 2289 (83.5) | 452 (16.5) | |
| Others | 114 (85.1) | 20 (14.9) | χ2(1)=0.23, p=0.633 |
| Marital status | |||
| Single | 122 (80.8) | 29 (19.2) | |
| Married | 2166 (84.1) | 411 (15.9) | |
| Others | 115 (78.2) | 32 (21.8) | χ2(2)=4.34, p=0.114 |
| Education | |||
| Low | 196 (80.7) | 47 (19.3) | |
| Medium | 1593 (84.2) | 300 (15.8) | |
| High | 614 (83.1) | 125 (16.9) | χ2(2)=2.10, p=0.351 |
| Household income per month | |||
| Low | 333 (83.5) | 66 (16.5) | |
| Medium | 1566 (83.7) | 306 (16.3) | |
| High | 326 (83.8) | 63 (16.2) | |
| DK (don't know) | 178 (75.7) | 57 (24.3) | χ2(3)=0.12, p=0.989 |
| Continuous variable | |||
| Age (years) | |||
| Mean (SD) | 47.36 (8.53) | 50.41 (11.86) | t (2873)=4.56, p<0.001 |