Benjamin L Brett1,2, Gary S Solomon2,3, Jennifer Hill4, Philip Schatz4. 1. Department of Counseling, Educational Psychology and Research, The University of Memphis, Memphis, TN, USA. 2. Vanderbilt Sports Concussion Center, Nashville, TN, USA. 3. Department of Neurological Surgery, Vanderbilt University School of Medicine, Nashville, TN, USA. 4. Department of Psychology, Saint Joseph's University, Philadelphia, PA, USA.
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.
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.
Authors: Kristin Wilmoth; Benjamin L Brett; Natalie A Emmert; Carolyn M Cook; Jeffrey Schaffert; Todd Caze; Thomas Kotsonis; Margaret Cusick; Gary Solomon; Jacob E Resch; C Munro Cullum; Lindsay D Nelson; Michael McCrea Journal: Neuropsychol Rev Date: 2022-08-30 Impact factor: 6.940
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Authors: Alden R Weiner; John R Durbin; Susie R Lunardi; Adam Y Li; Theodore C Hannah; Alexander J Schupper; Jonathan S Gal; Oranicha Jumreornvong; Zachary Spiera; Muhammad Ali; Naoum Fares Marayati; Alex Gometz; Mark R Lovell; Tanvir F Choudhri Journal: Orthop J Sports Med Date: 2022-01-17