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

Stephanie Agtarap, Mark D. Kramer, Laura Campbell-Sills, Esther Yuh, Pratik Mukherjee, Geoffrey T. Manley, Michael A. McCrea, Sureyya Dikmen, Joseph T. Giacino, Murray B. Stein, Lindsay D. Nelson, Opeolu Adeoye, Neeraj Badjatia, Kim Boase, Yelena Bodien, M. Ross Bullock, Randall Chesnut, John D. Corrigan, Karen Crawford, Ramon Diaz-ArrastiaAnn Christine Duhaime, Richard Ellenbogen, V. Ramana Feeser, Adam R. Ferguson, Brandon Foreman, Raquel Gardner, Etienne Gaudette, Dana Goldman, Luis Gonzalez, Shankar Gopinath, Rao Gullapalli, J. Claude Hemphill, Gillian Hotz, Sonia Jain, Frederick K. Korley, Joel Kramer, Natalie Kreitzer, Harvey Levin, Chris Lindsell, Joan Machamer, Christopher Madden, Alastair Martin, Thomas McAllister, Randall Merchant, Laura B. Ngwenya, Florence Noel, David Okonkwo, Eva Palacios, Daniel Perl, Ava Puccio, Miri Rabinowitz, Claudia Robertson, Jonathan Rosand, Angelle Sander, Gabriella Satris, David Schnyer, Seth Seabury, Mark Sherer, Sabrina Taylor, Nancy Temkin, Arthur Toga, Alex Valadka, Mary Vassar, Paul Vespa, Kevin Wang, John K. Yue, Ross Zafonte

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1656-1670
Number of pages15
JournalAssessment
Volume28
Issue number6
DOIs
StatePublished - Sep 2021

Keywords

  • Rivermead Postconcussion Symptoms Questionnaire
  • bifactor
  • invariance
  • mild TBI
  • postconcussive symptoms
  • traumatic brain injury

ASJC Scopus subject areas

  • Clinical Psychology
  • Applied Psychology

Fingerprint

Dive into the research topics of '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'. Together they form a unique fingerprint.

Cite this