Fig 1.

Percentage of participants reporting website engagement at follow-up overall and by baseline smoking risk. Note: In bivariate analyses of message framing effects in the study sample χ ² [2 df] = 10.25, p = .006; among non-susceptible, never smokers χ ² [2 df] = 6.96, p = .031; and among susceptible never smokers/ever smokers χ ² [2 df] = 4.96, p = .084. In a multivariable logistic regression model that adjusted for baseline intentions to visit the website, the interaction between message condition and baseline smoking risk was not statistically significant (χ² [2 df] = 1.53, p = .466)