Table 4A

Demographic and socioeconomic predictors of PBCs and MBCs as a regular brand compared with discount brand cigarettes (DBC)

Explanatory variablesn% n (raw)Premium brand cigarette (PBC) smokerMid-priced brand cigarette (MBC) smoker
OR (95% CI)P valuesOR (95% CI)P values
Intercept0.01 (0.00 to 0.02)<0.0010.14 (0.07 to 0.26)<0.001
Survey waves
 Wave 1345219.1ReferenceReference
 Wave 2358619.91.50 (0.87 to 2.58)0.11.39 (1.09 to 1.78)0.009
 Wave 3417223.12.89 (1.91 to 4.37)<0.0011.68 (1.27 to 2.22)<0.001
 Wave 4407022.516.10 (9.85 to 26.32)<0.0014.47 (3.10 to 6.44)<0.001
 Wave 5277515.451.66 (29.34 to 90.95)<0.0017.01 (4.28 to 11.46)<0.001
Age group
 18–242461.45.41 (2.24 to 13.03)<0.0013.26 (1.52 to 7.03)0.003
 25–39319117.77.94 (5.44 to 11.60)<0.0013.56 (2.89 to 4.38)<0.001
 40–54847447.02.66 (1.96 to 3.61)<0.0011.79 (1.51 to 2.12)<0.001
 55+613734ReferenceReference
Sex
 Male17 19695.242.07 (1.03 to 4.17)0.0411.34 (0.97 to 1.84)0.076
 Female8594.76ReferenceReference
City
 Beijing276315.3ReferenceReference
 Shenyang265314.71.19 (0.65 to 2.20)0.5671.73 (1.05 to 2.84)0.032
 Shanghai344619.120.41 (11.71 to 35.57)<0.00117.80 (11.54 to 27.46)<0.001
 Changsha269814.90.82 (0.42 to 1.60)0.5640.51 (0.30 to 0.86)0.012
 Guangzhou205611.40.74 (0.35 to 1.56)0.4292.74 (1.49 to 5.05)0.002
 Kunming206611.414.65 (6.94 to 30.90)<0.0017.89 (4.59 to 13.54)<0.001
 Yinchuan237313.12.85 (1.40 to 5.80)0.0042.38 (1.54 to 3.67)<0.001
Time in sample
 1780243.21.67 (0.89 to 3.13)0.1111.30 (0.69 to 2.43)0.414
 2494027.41.35 (0.68 to 2.69)0.3911.21 (0.64 to 2.27)0.558
 3298816.61.11 (0.66 to 1.85)0.6941.19 (0.69 to 2.04)0.522
 416319.01.06 (0.65 to 1.72)0.8210.91 (0.60 to 1.39)0.671
 56943.8ReferenceReference
Smoking status
 Daily17 15695.00.29 (0.20 to 0.43)<0.0010.65 (0.48 to 0.89)0.007
 Weekly8985.0ReferenceReference
Affordability6.52 (4.25 to 10.00)<0.0011.62 (1.11 to 2.36)0.012
  • The variables in the model are presented in table 4b.