Likelihood of smoking cessation and cessation attempts at Wave 2 by purchase of low/untaxed cigarettes at Wave 1 (n = 6682)
| Country | “Low/untaxed” source at last purchase Wave 1 | n | % | Quit smoking—Wave 2 | Quit attempt—Wave 2 | ||||
|---|---|---|---|---|---|---|---|---|---|
| % | RR | p Value | % | RR | p Value | ||||
| Logistic regression models predicting indicators of cessation as a function of cheaper purchase controlling for age, ethnicity, sex, income, education, number of cigarettes per day, time to first cigarette, and past quit attempts. | |||||||||
| Respondents were considered to be “low/untaxed” purchasers if they reported that the last place they purchased cigarettes was either: an Indian reservation, out of state/province, a duty-free store, an independent seller, the internet, a military commissary, or a toll-free number. | |||||||||
| Table 4 is restricted to the cohort of respondents who were smokers at Wave 1 and completed the Wave 2 survey. Therefore, the percentage who purchased from a low/untaxed source at Wave 1 is different in table 4, compared to tables 2 and 3. Sample sizes presented in the table are unweighted, and percentages are from weighted data. | |||||||||
| There were significant country by “cheaper cigarette purchase” interactions at the 5% level for quitting and for quit attempts. | |||||||||
| Overall | No | 6224 | 93.8 | 9.0 | 1.00 | Ref | 37.1 | 1.00 | Ref |
| Yes | 458 | 6.2 | 8.1 | 0.93 | 0.71 | 26.2 | 0.70 | <0.01 | |
| Canada | No | 1613 | 97.1 | 10.8 | 1.00 | Ref | 44.4 | 1.00 | Ref |
| Yes | 52 | 2.9 | 5.8 | 0.57 | 0.36 | 28.8 | 0.49 | 0.02 | |
| USA | No | 1247 | 95.4 | 8.4 | 1.00 | Ref | 36.9 | 1.00 | Ref |
| Yes | 82 | 4.6 | 4.9 | 0.72 | 0.54 | 28.0 | 0.85 | 0.55 | |
| UK | No | 1533 | 84.2 | 9.3 | 1.00 | Ref | 32.7 | 1.00 | Ref |
| Yes | 304 | 15.8 | 7.9 | 0.87 | 0.55 | 23.4 | 0.63 | <0.01 | |
| Australia | No | 1831 | 99.1 | 7.6 | 1.00 | Ref | 33.9 | 1.00 | Ref |
| Yes | 20 | 0.9 | 30.0 | 4.87 | <0.01 | 55.0 | 2.37 | 0.06 | |