Faculty Collaboration Database

Two-year Test-Retest Reliability in High School Athletes Using the Four- and Two-Factor ImPACT Composite Structures: The Effects of Learning Disorders and Headache/Migraine Treatment History. Arch Clin Neuropsychol 2018 Mar 01;33(2):216-226

Date

07/02/2017

Pubmed ID

28666316

DOI

10.1093/arclin/acx059

Scopus ID

2-s2.0-85043362952 (requires institutional sign-in at Scopus site)   10 Citations

Abstract

OBJECTIVE: This study examined the test-retest reliability of the four- and two-factor structures (i.e., Memory and Speed) of ImPACT over a 2-year interval across multiple groups with premorbid conditions, including those with a history of special education or learning disorders (LD; n = 114), treatment history for headache/migraine (n = 81), and a control group (n = 792).

METHODS: Nine hundred and eighty seven high school athletes completed baseline testing using online ImPACT across a 2-year interval. Paired-samples t-tests documented improvement from initial to follow-up assessments. Test stability was examined using Regression-based measures (RBM) and Reliable change indices (RCI). Reliability was examined using intraclass correlation coefficients (ICC).

RESULTS: Significant improvement on all four composites were observed for the control group over a 2-year interval; whereas significant differences were observed only on Visual Motor Speed for the LD and headache/migraine treatment history groups. ICCs ranges were similar across groups and greater or comparable reliability was observed for the two-factor structure on Memory (0.67-0.73) and Speed (0.76-0.78) composites. RCIs and RBMs demonstrated stability for the four- and two-factor structures, with few cases falling outside the range of expected change within a healthy sample at the 90% and 95% CIs.

CONCLUSION: Typical practices of obtaining new baselines every 2 years in the high school population can be applied to athletes with a history of special education or LD and headache/migraine treatment. The two-factor structure has potential to increase test-retest reliability. Further research regarding clinical utility is needed.

Author List

Brett BL, Solomon GS, Hill J, Schatz P

Author

Benjamin Brett PhD Assistant Professor in the Neurosurgery department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Adolescent
Age Factors
Athletic Injuries
Brain Concussion
Female
Humans
Longitudinal Studies
Male
Memory Disorders
Migraine Disorders
Neuropsychological Tests
Reaction Time
Reproducibility of Results
Schools
Verbal Learning