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- Title
Concussion in contact sports: reliable change indices of impairment and recovery.
- Authors
Hinton-Bayre, A D; Geffen, G M; Geffen, L B; McFarland, K A; Friis, P
- Abstract
This paper reports a follow-up study to an article on the sensitivity of three tests of speed of information processing to impairment after concussion (Hinton-Bayre, Geffen, & McFarland, 1997). Group analyses showed that practice effects can obscure the effects of concussion on information processing, thereby making the assessment of functional impairment and recovery after injury unreliable. A Reliable Change Index (RCI) was used to assess individual variations following concussion. It was found that 16 of the 20 concussed professional rugby league players were impaired 1-3 days following injury. It was also demonstrated that 7 players still displayed cognitive deficits at 1-2 weeks, before returning to preseason levels at 3-5 weeks. The RCI permits comparisons between different tests, players, and repeated assessments, thereby providing a quantitative basis for decisions regarding return to play.
- Publication
Journal of clinical and experimental neuropsychology, 1999, Vol 21, Issue 1, p70
- ISSN
1380-3395
- Publication type
Journal Article
- DOI
10.1076/jcen.21.1.70.945