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

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

ComparisonsAfter First Change PointAfter Second Change Point
Incident95%CIRecurrent95%CIIncident95%CIRecurrent95%CI
Did Not Specify Category of Healthcare Provider for RTP Clearance vs. Specified Category of Healthcare Providera7.22%*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 Clearanceb0.73%*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 Educationc− 0.03%− 0.55, 0.49%− 3.79%− 8.82, 1.52%− 0.14%− 0.51, 0.23%0.42%− 0.18, 1.02%
  1. Abbreviations: RTP Return to play, TBI Traumatic brain injury, CI Confidence interval
  2. * P < 0.05
  3. a Difference in rate of change per standardized month relative to states that specified category of healthcare provider for return to play clearance
  4. b Difference in rate of change per standardized month relative to states that specified physician only for return to play clearance
  5. c Difference in rate of change per standardized month relative to states that specified either coaches or parents/guardians education