National and State-Specific Sales and Prices for Electronic Cigarettes—U.S., 2012–2013

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Introduction The growing market for electronic cigarettes (e-cigarettes) has been widely reported in the media, but very little objective data exist in the scientific literature, and no data have been published on state-specific trends in prices or sales. Our objective is to...

Effect of Screening Mammography on Cancer Incidence and Mortality

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With increasing availability of massive quantities of health care data and advances in technology for data analyses, novel investigations of health delivery and outcomes are proliferating. In this issue of JAMA Internal Medicine, Harding et al1 investigate the health effects of...

Attitudes Toward Raising the Minimum Age of Sale for Tobacco Among U.S. Adults

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Introduction Efforts to disrupt tobacco sales to minors through age of sale restrictions can contribute to reductions in youth tobacco use. The objective of this study was to assess attitudes toward raising the minimum tobacco age of sale to 21 years among U.S. adults. Methods...