3. To conduct an economic analysis to test the hypothesis that while costlier, ITC will be more effective and have greater reach than UC in the lung screening setting, making it more cost-effective in terms of costs per 3-, 6- and 12-month cessation rates and quit attempts. The investigators will use these results as inputs to the CISNET model to project the long-term impact of the interventions on costs per life year saved and quality-adjusted life years saved, lung cancer deaths averted, lung cancer mortality reduction, and overall population mortality.