Changes over time in the relationship between reactions to health warning labels and plans to quit smoking.

Abstract

INTRODUCTION: The impact of health warning labels (HWL) on cigarette packaging appears to diminish over time. This study assesses the relationship between HWL reactions and changes in plans to quit smoking over time. METHODS: We analyzed data from the International Tobacco Control (ITC) Four Country Survey, focusing on daily smokers in Australia, England, and the US. We used self-reported measures of noticing HWLs (Noticing), HWL-triggered quit thoughts (Think Quit), and plans to quit smoking (Quit Plan) to compare data from peak HWL-response periods with more recent survey waves. Logistic regression models estimated the relationship between HWL reactions and Quit Plans, adjusting for demogr..