['Second-hand smoke is associated with an increased risk of adverse health outcomes, such as acute myocardial infarction (AMI) and coronary heart disease (CHD). At present, 38 US states/territories have enacted Clean Indoor Air Acts (CIAAs). The purpose of the current study was to compare the prevalence of self-reported health outcomes on a state/territory-wide level 1 year prior to CIAA implementation and at least 1 year after CIAA implementation for each respective state/territory.', 'Pre-test, post-test study.', "Seventeen states/territories with pre- and post-CIAA data were included in the current study. All data (AMI, CHD/angina, former and current smoker rates) were collected from the Behavioral Risk Factor Surveillance System (BRFSS) in the year prior to each state/territory's respective CIAA implementation (baseline) and 2009 (most recent year with BRFSS data).", 'Between baseline and 2009, 10 states/territories (58.8%) had a significant decrease in the prevalence of CHD/angina or AMI, 11 states/territories (64.7%) had a significant decrease in the prevalence of current smokers, and three states/territories (17.7%) had a significant decrease in the prevalence of both current and former smokers. Six states/territories (35.3%) had a significant increase in the prevalence of former smokers.'] Does clean Indoor Air act reduce the burden of adverse cardiovascular outcomes?