New paper: Clean indoor air laws and state tobacco control spending are effective in reducing young adult smoking

Matthew Farrelly and collaegaues at RTI and the CDC Office on smoking an health recently published a nice paper, "Are tobacco control policies effective in reducing young adult smoking?" in Journal of Adolescent Health that shows that spending on state tobacco control programs and clean indoor air laws are associated with less young adult smoking.
 
Here is the abstract:
 
PURPOSE:
We examined the influence of tobacco control program funding, smoke-free air laws, and cigarette prices on young adult smoking outcomes.
METHODS:
We use a natural experimental design approach that uses the variation in tobacco control policies across states and over time to understand their influence on tobacco outcomes. We combine individual outcome data with annual state-level policy data to conduct multivariable logistic regression models, controlling for an extensive set of sociodemographic factors. The participants are 18- to 25-year-olds from the 2002-2009 National Surveys on Drug Use and Health. The three main outcomes are past-year smoking initiation, and current and established smoking. A current smoker was one who had smoked on at least 1 day in the past 30 days. An established smoker was one who had smoked 1 or more cigarettes in the past 30 days and smoked at least 100 cigarettes in his or her lifetime.
RESULTS:
Higher levels of tobacco control program funding and greater smoke-free-air law coverage were both associated with declines in current and established smoking (p CONCLUSIONS:
Smoke-free air laws and state tobacco control programs are effective strategies for curbing young adult smoking.
 
The paper is available at J Adolesc Health. 2014 Apr;54(4):481-6. doi: 10.1016/j.jadohealth.2013.09.015. Epub 2013 Nov 19.