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7.29 Racial differences in sport-related concussion clinical recovery appear mediated by initial symptom burden and moderated by concussion history
  1. Alan Tang1,2,
  2. Jessica Wallace3,
  3. Alan Grusky1,2,
  4. Brian Hou1,2,
  5. Katherine Hajdu1,2,
  6. Christopher Bonfield2,4,
  7. Scott Zuckerman2,4,
  8. Aaron Yengo-Kahn2,4
  1. 1Vanderbilt University School of Medicine, Nashville, USA
  2. 2Vanderbilt Sports Concussion Center, Nashville, USA
  3. 3University of Alabama, Tuscaloosa, USA
  4. 4Vanderbilt University Medical Center, Nashville, USA

Abstract

Objective Racial health outcome disparities exist in the United States. We sought to explore the association between race and sport-related concussion (SRC) recovery, as well as its mediating/moderating factors.

Design Retrospective cohort study.

Setting Regional Sport-Concussion Center.

Participants Athletes 12–18 years diagnosed with SRC from 11/2017–20/2020 were analyzed. Those missing key data, lost to follow-up, or missing race were excluded.

Assessment of Risk Factors The primary independent variable of interest was race, dichotomized as Black/White.

Outcome Measures The primary outcome was time to clinical recovery (days from injury until patient was either deemed recovered by an SRC provider or symptom score returned to baseline/zero).

Main Results A total of 389 (82%) White and 87 (18%) Black athletes were included. Black athletes more frequently reported no SRC history (83% vs. 67%, p=.006) and lower initial symptom burden (median total Post-Concussion Symptom Scale [PCSS] 11 vs. 23, p<.001) than White athletes. Black athletes achieved earlier clinical recovery (HR=1.35, 95%CI 1.03–1.77, p=.030), which remained significant (HR 1.32, 95%CI 1.00–1.73, p=.048) after adjusting for confounders associated with recovery but not with race (sex/psychiatric comorbidity/migraine comorbidity/late clinic presentation [>7 days]). A third model adding initial PCSS nullified the association between race/recovery HR=1.12, 95%CI 0.85–1.48, p=.410). Finally, adding prior concussion history further reduced this association (HR=1.01, 95%CI 0.77–134, p=.925).

Conclusions Black athletes achieved earlier clinical recovery following SRC, a difference explained by differences in initial symptom burden and self-reported concussion history. These crucial differences may stem from cultural/psychological/organic factors.

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