期刊
ARCHIVES OF CLINICAL NEUROPSYCHOLOGY
卷 29, 期 7, 页码 625-632出版社
OXFORD UNIV PRESS
DOI: 10.1093/arclin/acu041
关键词
Concussion; mTBI; Neuropsychological assessment; Baseline assessment
资金
- International Brain Research Foundation
- Sports Concussion Center of New Jersey
We compared classification accuracy of post-concussion test data against baseline and normative data, accounting for baseline level of performance. Athletes (N = 250) completed baseline and post-concussion ImPACT assessments, within 7 days of concussion (verified by sports medicine professionals and self-reported symptoms). Athletes were classified as below average, average, or above average at baseline. Change from baseline was calculated using reliable change indices (RCIs) and regression-based measures (RBz), and comparison to normative data was achieved using z-scores. Normative comparisons identified fewer symptomatic, concussed athletes than RCIs and RBz. Both RCIs and RBz consistently identified impairment at 1 and 1.5 SD, regardless of baseline level, whereas normative comparisons identified 46-48% fewer athletes performing above average at baseline using a cut-off of 1 SD and 36-38% fewer using a cut-off of 1.5 SD. The use of normative comparisons may differentially classify concussed, symptomatic athletes who are outside the average range at baseline.
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