The study assessed the Emergency department (ED) visits for asthma before and after the implementation of smoke-free legislation in Lexington-Fayette County, Kentucky during a period of 5 years.
Adjusting for seasonality, ED visits for asthma declined 22% from pre-law to post-law for all age groups.
Study: When household members smoked, children had up to 70% higher risk of wheezing through age 4 http://goo.gl/bTTyy
References:
Reduction in asthma-related emergency department visits after implementation of a smoke-free law. Rayens MK, Burkhart PV, Zhang M, Lee S, Moser DK, Mannino D, Hahn EJ. J Allergy Clin Immunol. 2008 Aug 9.
Worldwide, 40% of children, 33% of male non-smokers, 35% of female non-smokers are exposed to second-hand smoke http://goo.gl/xFGef
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