Justin OʼRourke1, Edan Critchfield, Jason Soble, Kathleen Bain, Chrystal Fullen, Blessen Eapen. 1. South Texas Veteran's Healthcare System Neuropsychology Consult Service (Drs O'Rourke, Soble, and Bain) and Polytrauma Rehabilitation Center (Drs Critchfield and Eapen), US Department of Veterans Affairs, San Antonio, Texas; and Psychology Department, Our Lady of the Lake University, San Antonio, Texas (Ms Fullen).
Abstract
OBJECTIVE: To examine the utility of the Mayo-Portland Adaptability Inventory-4th Edition Participation Index (M2PI) as a self-report measure of functional outcome following mild traumatic brain injury (mTBI) in US Military veterans. SETTING: Department of Veterans Affairs Polytrauma Rehabilitation Center specialty hospital. PARTICIPANTS: On hundred thirty-nine veterans with a history of self-reported mTBI. DESIGN: Retrospective cross-sectional examination of data collected from regular clinical visits. MAIN MEASURES: M2PI, Neurobehavioral Symptoms Inventory with embedded validity measures, Posttraumatic Stress Disorder Checklist-Military Version. RESULTS: Forty-one percent of the sample provided symptom reports that exceeded established cut scores on embedded symptom validity tests. Invalid responders had higher levels of unemployment and endorsed significantly greater functional impairment, posttraumatic stress symptoms, and postconcussive complaints. For valid responders, regression analyses revealed that self-reported functioning was primarily related to posttraumatic stress complaints, followed by postconcussive cognitive complaints. For invalid responders, posttraumatic stress complaints also predicted self-reported functioning. CONCLUSION: Caution is recommended when utilizing the M2PI to measure functional outcome following mTBI in military veterans, particularly in the absence of symptom validity tests.
OBJECTIVE: To examine the utility of the Mayo-Portland Adaptability Inventory-4th Edition Participation Index (M2PI) as a self-report measure of functional outcome following mild traumatic brain injury (mTBI) in US Military veterans. SETTING: Department of Veterans Affairs Polytrauma Rehabilitation Center specialty hospital. PARTICIPANTS: On hundred thirty-nine veterans with a history of self-reported mTBI. DESIGN: Retrospective cross-sectional examination of data collected from regular clinical visits. MAIN MEASURES: M2PI, Neurobehavioral Symptoms Inventory with embedded validity measures, Posttraumatic Stress Disorder Checklist-Military Version. RESULTS: Forty-one percent of the sample provided symptom reports that exceeded established cut scores on embedded symptom validity tests. Invalid responders had higher levels of unemployment and endorsed significantly greater functional impairment, posttraumatic stress symptoms, and postconcussive complaints. For valid responders, regression analyses revealed that self-reported functioning was primarily related to posttraumatic stress complaints, followed by postconcussive cognitive complaints. For invalid responders, posttraumatic stress complaints also predicted self-reported functioning. CONCLUSION: Caution is recommended when utilizing the M2PI to measure functional outcome following mTBI in military veterans, particularly in the absence of symptom validity tests.
Authors: William C Walker; Justin O'Rourke; Elisabeth Anne Wilde; Mary Jo Pugh; Kimbra Kenney; Clara Libby Dismuke-Greer; Zhining Ou; Angela P Presson; J Kent Werner; Jacob Kean; Deborah Barnes; Amol Karmarkar; Kristine Yaffe; David Cifu Journal: Brain Inj Date: 2022-02-02 Impact factor: 2.167