Does living near a tobacco retailer impact the efficacy of smoking cessation treatments?: Analysis from a randomized trial

The interaction between density and treatment arm on cessation did not reach statistical significance (<i>P</i> = 0.09). For each one-unit increase in density, there was no change in quit rates in the iCanQuit arm (<i>P</i> = 0.62). In the QuitGuide arm, higher density was associated with lower quit rates (OR = 0.54; 95 % CI, 0.27-1.06; <i>P</i> = 0.07), although not-statistically significant. There was a significant interaction between density and treatment arm on prolonged cigarette abstinence (<i>P</i> = 0.03). We found no change in prolonged abstinence in the iCanQuit arm (<i>P</i> = 0.44). In the QuitGuide arm, higher density was associated with lower prolonged abstinence (OR = 0.27; 95 % CI, 0.07-1.02; <i>P</i> = 0.054), although not-statistically significant. <i>Conclusions:</i> Living near tobacco retailers may undermine the effectiveness of standard behavioral treatment but appears to have no impact on the effectiveness of acceptance-based smoking cessation treatments.