Minimum detectable change and false positive rates of the vestibular/ocular motor screening (VOMS) tool: an NCAA-DoD care consortium analysis
Shawn R. Eagle, Department of Orthopedic Surgery, UPMC Sports Medicine Concussion Program, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Lyndsey M. Ferris, School of Optometry, Indiana University-Bloomington, Bloomington, Indiana, USA.
Anne Mucha, Department of Orthopedic Surgery, UPMC Sports Medicine Concussion Program, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Aaron Sinnott, Department of Orthopedic Surgery, UPMC Sports Medicine Concussion Program, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Gregory Marchetti, Department of Physical Therapy, Duquesne University, Pittsburgh, Pennsylvania, USA.
Alicia Trbovich, Department of Orthopedic Surgery, UPMC Sports Medicine Concussion Program, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Nicholas Port, School of Optometry, Indiana University-Bloomington, Bloomington, Indiana, USA.
Jay Clugston, Department of Community Health and Family Medicine, University of Florida, Gainesville, Florida, USA.
Justus Ortega, Department of Kinesiology and Recreation Administration, Humboldt State University, Arcata, USA.
Michael W. Collins, Department of Orthopedic Surgery, UPMC Sports Medicine Concussion Program, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Steven P. Broglio, School of Kinesiology, Michigan Concussion Center, University of Michigan, Ann Arbor, Michigan, USA.
Thomas McAllister, Department of Psychiatry, Indiana University School of Medicine, Indianapolis, India.
Michael A. McCrea, Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.
Paul Pasquina, Center for Rehabilitation Sciences Research, Uniformed Services University of the Health Sciences; Walter Reed National Military Medical Center, Bethesda, Maryland, USA.
Anthony P. Kontos, Department of Orthopedic Surgery, UPMC Sports Medicine Concussion Program, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Care Consortium Investigators
Abstract
OBJECTIVE: To derive minimum detectable change (MDC) across individual Vestibular-Ocular Motor Screening (VOMS) items and VOMS overall score in 17-25 years old collegiate athletes and to examine false positive rates. METHOD: Participants (n = 378) completed VOMS pre-season for two consecutive years. MDC was identified for individual VOMS symptom items and NPC distance (cm). Both total and change methods of VOMS scoring were included in analysis. RESULTS: Regarding total scoring, MDC for ocular VOMS symptom items was 1 and MDC for vestibular VOMS symptoms items was 2. MDC for NPC was 4 cm and for VOMS overall score was 10. Regarding change scoring, MDC for each VOMS symptom item was 1, and for VOMS overall score was 8. False positives ranged from 5.3% to 15.9%. CONCLUSIONS: This study presents MDCs for each VOMS item and overall VOMS score, using total and change scoring. These values can be considered true change outside measurement error with 95% confidence in a 17-25 year old collegiate athlete population.
