Πέμπτη 18 Μαΐου 2017

Conceptual Structure of Health Related Quality of Life for Persons with Traumatic Brain Injury: Confirmatory Factor Analysis of the TBI-QOL

Publication date: Available online 18 May 2017
Source:Archives of Physical Medicine and Rehabilitation
Author(s): Mark Sherer, Julia Maria Paul Poritz, David Tulsky, Pamela Kisala, Luis Leon-Novelo, Esther Ngan
ObjectiveTo determine the factor structure of the Traumatic Brain Injury – Quality of Life (TBI-QOL) measurement system.DesignObservational.Setting3 TBI Model Systems rehabilitation centers in the USParticipantsand Methods: 20 TBI-QOL item banks were administered to a sample of 504 community-dwelling adults with traumatic brain injury (TBI) as part of a study of TBI classification. A subsample of n=200 participants was randomly selected for exploratory factor analyses (EFA), while data from the remaining 304 participants were used for the confirmatory factor analysis (CFA). To examine a wide range of conceptual models, CFA were conducted on a total of 16 models, ranging from 1 to 7 factors.ResultsInitial EFA yielded support for a 5-factor model (negative emotion, cognitive impairment, functioning and participation, positive emotion, and pain). CFA results; however, indicated a 7-factor model including: physical function, physical symptoms, cognition, negative emotion, positive emotion, sense of self, and social participation (Model 16; Robust Fit Statistics RMSEA=0.063, SRMR=0.035, CFI=0.955, TLI=0.943, and BIC=40059.44).ConclusionsThe complex 7-factor model of the TBI-QOL provides a more nuanced framework for understanding health related quality of life for persons with TBI than the commonly used 3 factor model including physical health, mental health, and social health.



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