Figure 3From: The effects of a state concussion law on the frequency of sport-related concussions as seen in two emergency departments Adult SRC by month. This is a plot of the adult concussions plot of the high school concussion from September 2002 to June 2013. The line is the fit line plus 2 SD (a). The lower plot is the seasonal-adjusted data (b). *Note: The vertical line indicated the implementation of the law.Back to article page