The Concussion Resolution Index (CRI) is an online assessment tool designed to track resolution of symptoms following sports-related concussion. The CRI is composed of six subtests measuring reaction time, visual recognition, and speed of information processing. Three factors are derived from the subtests: Simple Reaction Time (SRT), Complex Reaction Time (CRT), and Processing Speed (PS). Multiple alternate forms within subtests afford simple, reliable, assessment of change, relative to a baseline test completed by an athlete. The test also assesses self-reported neurophysiological symptoms at the time of injury and tracks resolution of these symptoms. The data demonstrate the CRI is a valid and reliable measure of cognitive performance in a relatively heterogeneous group of athletes aged 13-35. Two methods of statistical analysis for assessing change from baseline were compared to establish a psychometric basis for return-to-play decision-making: the Reliable Change Index (RCI) and multiple regression. Multiple regression was more accurate than the RCI in determining a decline in performance relative to the baseline. 2002 National Academy of Neuropsychology. Published by Elsevier Science Ltd. All rights reserved.
D., E., D., F., K., K., T., K., H., K., J., F., … D., B. (2003). Development and validation of a web-based neuropsychological test protocol for sports-related return-to-play decision-making. Archives of Clinical Neuropsychology. D. Erlanger, HeadMinder Inc., 3 East 65th Street, New York, NY 10021, United States. E-mail: firstname.lastname@example.org: Elsevier Ltd. Retrieved from http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=reference&D=emed6&NEWS=N&AN=2003134162