Switching between premium or discount and contraband cigarettes as a predictor of cessation outcomes during 1-year follow-up period, by type of cigarette at baseline
| Outcome; type of cigarette at baseline | Respondents, %*† | RR (95% CI) | |
|---|---|---|---|
| Unadjusted | Adjusted‡ | ||
| Quit attempt | |||
| Premium/discount | |||
| No switching brands | 38.5 | 1.00 (ref) | 1.00 (ref) |
| Switched to contraband | 30.8 | 0.80 (0.55–1.11) | 0.80 (0.53–1.14) |
| Contraband | |||
| No switching brands | 24.4 | 1.00 (ref) | 1.00 (ref) |
| Switched to premium/discount | 29.3 | 1.20 (0.56–2.14) | 1.49 (0.51–2.86) |
| 30-day cessation§ | |||
| Premium/discount | |||
| No switching brands | 10.9 | 1.00 (ref) | 1.00 (ref) |
| Switched to contraband | 6.5 | 0.60 (0.23–1.46) | 0.92 (0.28–2.61) |
Note: CI = confidence interval, ref = reference category, RR = relative risk.
↵* Sample sizes for unadjusted analyses were 2471 overall, 2143 for premium/discount brands, and 328 for contraband cigarettes; sample sizes for adjusted analyses were 2068, 1813 and 255, respectively. The total number of people who switched brands was 152 for premium/discount and 37 for contraband.
↵† Population-weighted estimates.
↵‡ Adjusted for all covariates listed in Table 1.
↵§ Because only 1 respondent switched from contraband to premium/discount cigarettes and reported a period of 30-day cessation, the contraband portion of the analysis was omitted.