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The epidemiology of new versus recurrent sports concussions among high school athletes, 2005-2010.

Abstract：

OBJECTIVES:To compare new versus recurrent concussions with respect to constellation of symptoms, symptom severity, symptom resolution; evaluate potential subset differences with respect to gender and sport; and to compare mechanisms and activities associated with new versus recurrent concussions. METHODS:Sports-related injury and exposure data were collected for nine sports from 2005 to 2010 from 100 nationally representative US high schools. RESULTS:Nationally, an estimated 732,805 concussions occurred. Of these reported concussions, 13.2% were recurrent. The rate of new concussions was 22.2 per 100,000 athletic exposures while the rate of recurrent concussions was 3.1 per 100,000 athletic exposures (RR 7.23, 95% CI 6.39 to 8.17, p<0.001). While 0.6% of new concussion symptoms took >1 month to resolve, 6.5% of recurrent concussion symptoms took >1 month to resolve (IPR 10.35; 95% CI 4.62 to 23.16; p<0.001). Loss of consciousness was reported more often with recurrent (7.7%) than new concussions (4.4%) (IPR 1.76; 95% CI 1.02 to 3.03; p=0.043). A greater proportion of athletes sustaining recurrent concussions returned to play in >3 weeks (7.5%) or were medically disqualified (16.2%) than athletes sustaining new concussions (3.8%; IPR 1.95; 95% CI 1.01 to 3.77; p=0.047 and 2.9%; IPR 5.58; 95% CI 3.50 to 8.88; p<0.001, respectively). The majority of new and recurrent concussions resulted from contact with another person (73.4% and 77.9%, respectively). CONCLUSIONS:Athletes sustaining recurrent concussions had longer symptom resolution times, were kept out of play longer and reported loss of consciousness more frequently than athletes sustaining new concussions. With the possibility of long-term impairment and other negative sequelae, proper management and prevention of concussions at the high school level is imperative.

journal_name

Br J Sports Med

journal_title

British journal of sports medicine

authors

Castile L,Collins CL,McIlvain NM,Comstock RD

doi

10.1136/bjsports-2011-090115

subject

Has Abstract

pub_date

2012-06-01 00:00:00

pages

603-10

issue

eissn

0306-3674

issn

1473-0480

pii

bjsports-2011-090115

journal_volume

pub_type

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The epidemiology of new versus recurrent sports concussions among high school athletes, 2005-2010.