Chatterji, Pinka. <br/><br/>
Effects of Bicycle Helmet Laws on Children's Injuries / 
Pinka Chatterji, Sara Markowitz. 
 - Cambridge, Mass.  National Bureau of Economic Research  2013. 
 - 1 online resource:  illustrations (black and white); 
 - NBER working paper series  no. w18773 .
 - Working Paper Series (National Bureau of Economic Research)  no. w18773. .
<br/><br/> February 2013. 
<br/><br/> Cycling is popular among children, but results in thousands of injuries annually.  In recent years, many states and localities have enacted bicycle helmet laws.  We examine direct and indirect effects of these laws on injuries.  Using hospital-level panel data and triple difference models, we find helmet laws are associated with reductions in bicycle-related head injuries among children.  However, laws also are associated with decreases in non-head cycling injuries, as well as increases in head injuries from other wheeled sports.  Thus, the observed reduction in bicycle-related head injuries may be due to reductions in bicycle riding induced by the laws. 
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