The Cancer Intervention and Surveillance Modeling Network (CISNET) Lung Working Group previously generated smoking histories for the whole U.S. population using an age, period, and birth cohort methodologic framework. These inputs have been used in numerous models, including CAsToR's to simulate future patterns of smoking and to evaluate the potential impact of policies. However, the absence of detailed model-ready inputs on smoking behaviors for diverse U.S. populations has been a barrier to research evaluating future trends in smoking-related disparities or the projected impacts of policies across sociodemographic groups.

This supplement issue provides new estimates of smoking behaviors with detailed historical data by race/ethnicity, by educational attainment, by family income, and for each of the 50 U.S. states and Washington, District of Columbia. All-cause mortality RRs associated with smoking by race/ethnicity and educational attainment are also available for the first time.

Finally, the supplement issue presents comprehensive smoking histories for Brazil, showing the application of this methodology to resource-limited settings. Collectively, these data aim to offer insight into future U.S. and global smoking disparities and accelerate research on tobacco control policies that advance health equity.  This effort will allow tobacco simulation models to account comprehensively for population diversity, thereby enabling researchers to develop more sophisticated analyses of tobacco use and control intervention