Int. J. Environ. Res. Public Health 2011, 8 1681 3.2. Price Minimizing Behaviors as Predictors of Making a Quit Attempt between Survey Waves Based on chi-square analysis, for all price minimizing behaviors studied, a significantly smaller proportion of smokers reporting use at baseline made quit attempts at follow-up (Table 3). However, after adjusting for other covariates, purchasing from low/untaxed sources, using discount brands, or using RYO tobacco products at baseline were not predictive of making a quit attempt between baseline and follow-up. Respondents who purchased cartons of cigarettes were approximately 45% less likely to report making quit attempts (OR = 0.55, 95% CI: 0.47–0.65, Table 3) than those who did not purchase cartons. Additionally, combining these measures into ―any use‖ at baseline, respondents who reported at least one price/tax avoidance technique at last purchase were 24% less likely to report quit attempts compared to those who did not use any avoidance behaviors (OR = 0.76, 95% CI: 0.67–0.87). Increasing the number of price minimizing behaviors used resulted in decreased likelihood of making a quit attempt, as respondents who reported using two or more behaviors simultaneously were 31% less likely to report this cessation outcome at follow-up (OR = 0.69, 95% CI: 0.57–0.84). SES did not moderate any of the relationships between the price minimizing behaviors studied and making quit attempts. 3.3. Price Minimizing Behaviors as Predictors of Quitting at Follow-up Based on univariate analyses, use of the various price minimizing behaviors at baseline was associated with a decreased proportion of smokers quitting at follow-up; however, this difference was not statistically significant for use of discount brands or RYO tobacco (Table 3). After adjusting for covariates, respondents who purchased from low and untaxed sources at baseline were approximately 31% less likely to report cessation at follow-up (OR = 0.69, 95% CI: 0.45–1.00). Additionally, respondents who purchased tobacco in cartons were about 33% less likely to be quit at follow-up (OR = 0.67, 95% CI: 0.52–0.87). Similar to the univariate analyses, using discount brands or RYO tobacco was not significantly associated with cessation, although the point estimates are in the predicted direction suggesting use may confer a reduced likelihood of cessation. Based on the composite measure of ―any use‖ of price or tax avoidance behaviors, respondents who used at least one strategy were about 28% less likely to report cessation (OR = 0.72, 95% CI: 0.59–0.88), whereas respondents who engaged in multiple price minimizing behaviors simultaneously (2 or more) were about 41% less likely to quit at follow up (OR = 0.59, 95% CI: 0.42–0.81). No statistically significant interactions were present for any price or tax avoidance behaviors with SES on cessation at follow-up.