How Does the Affordable Care Act Affect Cigarette Consumption? –The Mechanism and Heterogeneity
with Yuqing Zheng and Steven Buck. Forthcoming. Journal of Consumer Affairs.
Abstract: We examine the average effect of the affordable care act (ACA) Medicaid expansion on cigarette consumption as well as heterogeneous effects by consumer types, depending on whether they use anti-smoking products and their baseline level of cigarette consumption. Using the Nielsen homescan consumer panel and generalized difference-in-differences (GDD) method, we find that anti-smoking products can induce cigarette smoking among moderate and heavy smokers. However, the ACA Medicaid expansion reduces cigarette smoking through channels other than anti-smoking products. As a net result, the ACA Medicaid expansion leads to a reduction in smoking. Light smokers are the main beneficiaries of ACA Medicaid expansion—their average cigarette consumption reduces by over one pack per month.
Grocery Food Taxes and U.S. County Obesity and Diabetes Rates
with Yuqing Zheng, Steven Buck, Diansheng Dong and Harry Kaiser. Health Economics Review, 11(1), 1-9.
Abstract: Grocery food taxes represent a stable tax revenue stream for state and municipal government during times of adverse economic shocks such as that observed under the coronavirus disease 2019 (COVID-19) pandemic. Previous research, however, suggests a possible mechanism through which grocery taxes may adversely affect health. Our objectives are to document the spatial and temporal variation in grocery taxes and to empirically examine the statistical relationship between county-level grocery taxes and obesity and diabetes. We collect and assemble a novel national dataset of annual county and state-level grocery taxes from 2009 through 2016. We link this data to three-year, county-level estimates based on data from the Centers for Disease Control and Prevention on rates of obesity and diabetes and provide a nation-wide spatial characterization of grocery taxes and these two health outcomes. Using a county-level fixed effects estimator, we estimate the effect of grocery taxes on obesity and diabetes rates, also controlling for a subset of potential confounders that vary over time. We find a 1 percentage point increase in grocery taxes is associated with 0.588 and 0.215 percentage point increases in the county-level obesity and diabetes rates. Counties with grocery taxes have increased prevalence of obesity and diabetes. We estimate the economic burden of increased obesity and diabetes rates resulting from grocery taxes to be $5.9 billion. Based on this estimate, the benefit-cost ratio of removing grocery taxes across the United States only considering the effects on obesity and diabetes rates is 1.90.