%0 Journal Article
%T Male youth ice hockey concussion incidence in a USA hockey membership-adjusted population: a peak in 2011 and the impact of major rule changes
%J Clinical journal of sport medicine
%D 2021
%A Morrissey, Patrick J.
%A Shah, Neil V.
%A Hayden, Andrew J.
%A Zhou, Jack J.
%A Bloom, Lee R.
%A Aylyarov, Alexandr
%A Chatterjee, Dipal
%A Newman, Jared M.
%A Hariri, Omar K.
%A McCarthy, Matthew T.
%A Hesham, Khalid
%A Urban, William P. Jr
%V ePub
%N ePub
%P ePub-ePub
%X OBJECTIVE: To investigate the incidence of youth ice hockey-related concussions preceding and following the implementation of new body-checking and head contact rules by USA hockey in 2011. We hypothesized a decrease in concussions after the rule change. <br><br>DESIGN: Retrospective analysis. SETTING: United States emergency department (ED) data queried in the National Electronic InjurySurveillance System (NEISS). PATIENTS: National Electronic Injury Surveillance System reported male youth (≤18 years) ice hockey concussion cases from January 1, 2002, to December 31, 2016. In total, 848 players were diagnosed with concussion, representing a national estimate of 17 374 cases. INDEPENDENT VARIABLES: Time, specifically years. MAIN OUTCOME MEASURES: Incidences and incidence rates (measured per 10 000 person-years) of male youth ice hockey concussions. Annual trends were analyzed using descriptive and linear or polynomial regression analysis. <br><br>RESULTS: The national estimate of youth ice hockey-related concussions seen in US emergency departments (EDs) increased significantly from 656 in 2007 to 2042 in 2011 (P < 0.01). During the same period, their respective incidence increased significantly from 21.8 to 66.8 per 10 000, before dropping through 2016 (P < 0.05). After 2011, concussions decreased from 1965 in 2012 to 1292 in 2016 (P = 0.055). The gap in concussion incidence between the 11 to 12 and 13 to 14 divisions widened after 2011 (before 2011: 41 vs 49 per 10 000 person-years [P = 0.80]; after 2011: 45 and 89, respectively [P < 0.01]). <br><br>CONCLUSIONS: US EDs experienced a significant increase in youth ice hockey concussion visits from 2007 to 2011. After the 2011 rule changes, concussion visits decreased significantly from 2012 to 2016.<p /> <p>Language: en</p>
%G en
%I Lippincott Williams and Wilkins
%@ 1050-642X
%U http://dx.doi.org/10.1097/JSM.0000000000000893