Percentage of smokers who recently purchased cigarettes from cheaper sources by characteristic and AORs from the general estimating equations model
| Characteristic | Per cent purchasing cigarettes from cheaper sources | AOR | 95% CI |
|---|---|---|---|
| Total | 15.6 | ||
| Gender | |||
| Men | 15.8 | Reference | |
| Women | 12.2 | 0.68 | 0.44 to 1.05 |
| Age (years) | |||
| 18–24 | 23.6 | 1.49* | 1.17 to 3.92 |
| 25–39 | 20.2 | 1.32 | 0.94 to 1.84 |
| 40–54 | 15.6 | 0.92 | 0.71 to 1.19 |
| 55+ | 13.6 | Reference | |
| Marital status | |||
| Married or living together | 15.6 | Reference | |
| Divorced or separated or windowed | 17.2 | 1.10 | 0.78 to 1.54 |
| Single | 13.8 | 0.70 | 0.43 to 1.16 |
| Monthly household income | |||
| Low | 26.2 | 2.93* | 2.27 to 3.79 |
| Middle | 17.0 | 1.73* | 1.39 to 2.15 |
| High | 9.5 | Reference | |
| Education | |||
| Low | 17.2 | 0.90 | 0.64 to 1.27 |
| Middle | 16.1 | 0.99 | 0.76 to 1.29 |
| High | 13.0 | Reference | |
| Employment status | |||
| Employed | 14.9 | Reference | |
| Unemployed | 24.7 | 1.21 | 0.94 to 1.56 |
| Retired | 13.0 | 0.84 | 0.63 to 1.12 |
| City | |||
| Beijing | 11.1 | Reference | |
| Shenyang | 19.3 | 1.29 | 0.88 to 1.90 |
| Shanghai | 10.4 | 0.80 | 0.55 to 1.16 |
| Changsha | 15.1 | 1.00 | 0.69 to 1.46 |
| Guangzhou | 13.6 | 1.03 | 0.69 to 1.54 |
| Yinchuan | 28.7 | 2.22* | 1.53 to 3.23 |
| Smoking intensity (CPD) | |||
| Light (0–10 CPD) | 14.7 | Reference | |
| Moderate (11–20 CPD) | 15.8 | 0.96 | 0.78 to 1.19 |
| Heavy (21+ CPD) | 17.4 | 0.91 | 0.68 to 1.22 |
QIC score: 6584.16.
*p<0.05 (two-tailed).
AOR, adjusted OR; CPD, cigarettes per day; QIC, quasi-likelihood under the independence model criterion.