TY  - JOUR
PY  - 1999//
TI  - Concussion in contact sports: reliable change indices of impairment and recovery
JO  - Journal of clinical and experimental neuropsychology
A1  - Hinton-Bayre, A. D.
A1  - Geffen, G. M.
A1  - Geffen, L. B.
A1  - McFarland, K. A.
A1  - Friis, P.
SP  - 70
EP  - 86
VL  - 21
IS  - 1
N2  - 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.<p /> <p>Language: en</p>
LA  - en
SN  - 1380-3395
UR  - http://dx.doi.org/
ID  - ref1
ER  -