Table 2. Estimated multivariate logistic regression model for local brand smoking in current smokers in Wave 5 of the International Tobacco Control China Survey (n=6,419).
| Item | Sample size of adults | Sample size of LB smokers | AOR | 95% CI | p-value |
| Note: p-values are calculated from the weighted bivariate analysis chi-square tests.Abbreviations: LB=local brand; AOR=adjusted odds ratio; CI=confidence interval; NLV=non-local venture; LV=local venture.† Education was categorized as high education (more than senior high school), medium education (senior high school), and low education (less than senior high school).¶ Rural areas consisted of Changzhi, Yichun, Tongren, and Huzhou. Urban areas consisted of Beijing, Shenyang, Guangzhou, Shanghai, and Kunming.§ This indicator variable consisted of areas with non-local ventures (NLVs; non-local brands using local cigarette factories including Beijing, Shenyang, Changzhi, and Yichun) or local ventures (LVs; local brands using local cigarette factories including Kunming, Guangzhou, Shanghai, Huzhou, and Tongren). | |||||
| Intercept | 0.22 | 0.13–0.37 | <0.001 | ||
| Sex | |||||
| Female | 276 | 97 | Reference | ||
| Make | 6,143 | 2,979 | 0.72 | 0.50–1.05 | 0.087 |
| Age group, years | |||||
| 18–24 | 142 | 79 | 1.52 | 0.95–2.46 | 0.086 |
| 25–39 | 1,121 | 610 | 1.65 | 1.35–2.03 | <0.001 |
| 40–54 | 2,798 | 1,319 | 1.35 | 1.16–1.57 | <0.001 |
| 55+ | 2,358 | 1,068 | Reference | ||
| Ethnicity | |||||
| Non-Han | 817 | 632 | Reference | ||
| Han | 5,602 | 2,444 | 0.82 | 0.66–1.01 | 0.061 |
| Income | |||||
| High (≥3,000 CNY) | 3,842 | 1,933 | Reference | ||
| Medium (1,000–2,999 CNY) | 1,280 | 513 | 1.29 | 1.07–1.55 | 0.008 |
| Low (<1,000 CNY) | 379 | 170 | 1.26 | 0.91–1.74 | 0.161 |
| Unknown | 918 | 460 | 0.89 | 0.73–1.10 | 0.284 |
| Education† | |||||
| High | 1,017 | 556 | Reference | ||
| Medium | 4,045 | 1,840 | 0.67 | 0.55–0.83 | <0.001 |
| Low | 1,357 | 680 | 0.53 | 0.41–0.69 | <0.001 |
| Marital status | |||||
| Married or living with a partner | 5,634 | 2,675 | Reference | ||
| Divorced or separated | 307 | 146 | 0.74 | 0.55–1.01 | 0.054 |
| Widowed | 154 | 65 | 0.75 | 0.50–1.13 | 0.167 |
| Single | 324 | 190 | 0.95 | 0.69–1.31 | 0.749 |
| Rural/urban area type¶ | |||||
| Rural area | 3,072 | 1,385 | Reference | ||
| Urban area | 3,347 | 1,691 | 0.79 | 0.67–0.93 | 0.005 |
| NLV/LV§ | |||||
| NLV | 2,796 | 1,385 | Reference | ||
| LV | 3,623 | 1,691 | 30.95 | 26.36–36.49 | <0.001 |
| Smoking frequency | |||||
| Daily | 5,960 | 2,886 | 1.04 | 0.79–1.38 | 0.765 |
| Non-daily | 459 | 190 | Reference | ||
| Smoking intensity | |||||
| Heavy | 3,886 | 1,946 | 1.04 | 0.90–1.20 | 0.637 |
| Light | 2,533 | 1,130 | Reference | ||