Evaluating the effectiveness of traumatic brain injury state laws among high school athletes

Table 3 Comparisons of Specific Language of TBI Laws by Time Period and Injury Characterization, 2005/06–2017/18

Comparisons	After First Change Point				After Second Change Point
Comparisons	Incident	95%CI	Recurrent	95%CI	Incident	95%CI	Recurrent	95%CI
Did Not Specify Category of Healthcare Provider for RTP Clearance vs. Specified Category of Healthcare Provider^a	7.22%*	4.22, 10.31%	4.01%	− 0.77, 9.02%	0.12%	− 0.15, 0.40%	1.59%	− 0.22, 3.42%
Specified Multiple Categories of Healthcare Providers vs. Specified Physicians Only for RTP Clearance^b	0.73%*	0.19, 1.26%	0.64%	− 2.49, 3.87%	3.79%*	0.92, 6.75%	0.37%	− 2.99, 3.86%
Specified Both Coaches and Parents/Guardians vs. Specified Either Coaches or Parents/Guardians Education^c	− 0.03%	− 0.55, 0.49%	− 3.79%	− 8.82, 1.52%	− 0.14%	− 0.51, 0.23%	0.42%	− 0.18, 1.02%

Abbreviations: RTP Return to play, TBI Traumatic brain injury, CI Confidence interval
* P < 0.05
^a Difference in rate of change per standardized month relative to states that specified category of healthcare provider for return to play clearance
^b Difference in rate of change per standardized month relative to states that specified physician only for return to play clearance
^c Difference in rate of change per standardized month relative to states that specified either coaches or parents/guardians education

ISSN: 2197-1714