Addiction
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Observational Study
Tobacco-21 laws and young adult smoking: quasi-experimental evidence.
To estimate the impact of tobacco-21 laws on smoking among young adults who are likely to smoke, and consider potential social multiplier effects. Design Quasi-experimental, observational study using new 2016-17 survey data. ⋯ Tobacco-21 laws appear to reduce smoking among 18-20-year-olds who have ever tried cigarettes.