Invariance of the Bifactor Structure of Mild Traumatic Brain Injury (mTBI) Symptoms on the Rivermead Postconcussion Symptoms Questionnaire Across Time, Demographic Characteristics, and Clinical Groups: A TRACK-TBI Study. (September 2021)

• Record Type: Journal Article
• Authors: Agtarap, Stephanie; Kramer, Mark D.; Campbell-Sills, Laura; Yuh, Esther; Mukherjee, Pratik; Manley, Geoffrey T.; McCrea, Michael A.; Dikmen, Sureyya; Giacino, Joseph T.; Stein, Murray B.; Nelson, Lindsay D.
• Other Names: Adeoye Opeolu non-byline-author.; Badjatia Neeraj non-byline-author.; Boase Kim non-byline-author.; Bodien Yelena non-byline-author.; Bullock M. Ross non-byline-author.; Chesnut Randall non-byline-author.; Corrigan John D. non-byline-author.; Crawford Karen non-byline-author.; Diaz-Arrastia Ramon non-byline-author.; Duhaime Ann-Christine non-byline-author.; Ellenbogen Richard non-byline-author.; Feeser V Ramana non-byline-author.; Ferguson Adam R. non-byline-author.; Foreman Brandon non-byline-author.; Gardner Raquel non-byline-author.; Gaudette Etienne non-byline-author.; Goldman Dana non-byline-author.; Gonzalez Luis non-byline-author.; Gopinath Shankar non-byline-author.; Gullapalli Rao non-byline-author.; Hemphill J Claude non-byline-author.; Hotz Gillian non-byline-author.; Jain Sonia non-byline-author.; Korley Frederick K. non-byline-author.; Kramer Joel non-byline-author.; Kreitzer Natalie non-byline-author.; Levin Harvey non-byline-author.; Lindsell Chris non-byline-author.; Machamer Joan non-byline-author.; Madden Christopher non-byline-author.; Martin Alastair non-byline-author.; McAllister Thomas non-byline-author.; Merchant Randall non-byline-author.; Ngwenya Laura B. non-byline-author.; Noel Florence non-byline-author.; Okonkwo David non-byline-author.; Palacios Eva non-byline-author.; Perl Daniel non-byline-author.; Puccio Ava non-byline-author.; Rabinowitz Miri non-byline-author.; Robertson Claudia non-byline-author.; Rosand Jonathan non-byline-author.; Sander Angelle non-byline-author.; Satris Gabriella non-byline-author.; Schnyer David non-byline-author.; Seabury Seth non-byline-author.; Sherer Mark non-byline-author.; Taylor Sabrina non-byline-author.; Temkin Nancy non-byline-author.; Toga Arthur non-byline-author.; Valadka Alex non-byline-author.; Vassar Mary non-byline-author.; Vespa Paul non-byline-author.; Wang Kevin non-byline-author.; Yue John K. non-byline-author.; Zafonte Ross non-byline-author.;
• Is Part Of: Assessment. Volume 28:Number 6(2021)
• Page Start: 1656
• Page End: 1670
• Publication Date: 2021-09
• Subjects: mild TBI -- bifactor -- invariance -- postconcussive symptoms -- Rivermead Postconcussion Symptoms Questionnaire -- traumatic brain injury; Psychological tests -- Periodicals; Psychodiagnostics -- Periodicals; Personality tests -- Periodicals; 150.287
• DOI: 10.1177/1073191120913941
• Languages: English
• ISSNs: 1073-1911

Abstract

This study aimed to elucidate the structure of the Rivermead Postconcussion Symptoms Questionnaire (RPQ) and evaluate its longitudinal and group variance. Factor structures were developed and compared in 1, 011 patients with mild traumatic brain injury (mTBI; i.e., Glasgow Coma Scale score 13-15) from the Transforming Research and Clinical Knowledge in TBI study, using RPQ data collected at 2 weeks, and 3, 6, and 12 months postinjury. A bifactor model specifying a general factor and emotional, cognitive, and visual symptom factors best represented the latent structure of the RPQ. The model evinced strict measurement invariance over time and across sex, age, race, psychiatric history, and mTBI severity groups, indicating that differences in symptom endorsement were completely accounted for by these latent dimensions. While highly unidimensional, the RPQ has multidimensional features observable through a bifactor model, which may help differentiate symptom expression patterns in the future.