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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.
Agtarap S, Kramer MD, Campbell-Sills L, Yuh E, Mukherjee P, Manley GT, McCrea MA, Dikmen S, Giacino JT, Stein MB, Nelson LD; TRACK-TBI Investigators <xref ref-type="aff" rid="aff7-1073191120913941" ptype="a1073191120913941" citart="citart1">*</xref>. Agtarap S, et al. Assessment. 2021 Sep;28(6):1656-1670. doi: 10.1177/1073191120913941. Epub 2020 Apr 24. Assessment. 2021. PMID: 32326739 Free PMC article.
Bifactor Model of the Sport Concussion Assessment Tool Symptom Checklist: Replication and Invariance Across Time in the CARE Consortium Sample.
Brett BL, Kramer MD, McCrea MA, Broglio SP, McAllister TW, Nelson LD; CARE Consortium Investigators; Hazzard JB Jr, Kelly LA, Ortega J, Port N, Pasquina PF, Jackson J, Cameron KL, Houston MN, Goldman JT, Giza C, Buckley T, Clugston JR, Schmidt JD, Feigenbaum LA, Eckner JT, Master CL, Collins MW, Kontos AP, Chrisman SPD, Duma SM, Miles CM, Susmarski A. Brett BL, et al. Am J Sports Med. 2020 Sep;48(11):2783-2795. doi: 10.1177/0363546520946056. Epub 2020 Aug 18. Am J Sports Med. 2020. PMID: 32809856 Free PMC article.