Abstract
Objective
To develop a pain interference item bank, computer adaptive test (CAT), and short
form for use by individuals with traumatic brain injury (TBI).
Design
Cross-sectional survey study.
Setting
Five TBI Model Systems rehabilitation hospitals.
Participants
Individuals with TBI (N=590).
Interventions
Not applicable.
Outcome Measures
Traumatic Brain Injury–Quality of Life (TBI-QOL) Pain Interference item bank.
Results
Confirmatory factor analysis provided evidence of a single underlying trait (χ2 [740]=3254.030; P<.001; Comparative Fix Index=0.988; Tucker-Lewis Index=0.980; Root Mean Square Error
of Approximation=0.076) and a graded response model (GRM) supported item fit of 40
Pain Interference items. Items did not exhibit differential item functioning or local
item dependence. GRM calibration data were used to inform the selection of a 10-item
static short form and to program a TBI-QOL Pain Interference CAT. Comparative analyses
indicated excellent comparability and reliability across test administration formats.
Conclusion
The 40-item TBI-QOL Pain Interference item bank demonstrated strong psychometric properties.
End users can administer this measure as either a 10-item short form or CAT.
Keywords
List of abbreviations:
CAT (computer adaptive test), CFA (confirmatory factor analysis), CFI (comparative fit index), DIF (differential item functioning), GRM (graded response model), IRT (item response theory), PRO (patient-reported outcome), PROMIS (Patient-Reported Outcomes Measurement Information System), RMSEA (Root Mean Square Error of Approximation), TBI (traumatic brain injury), TBI-QOL (Traumatic Brain Injury–Quality of Life measurement system), TLI (Tucker-Lewis index)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: September 25, 2019
Footnotes
Disclosures: All TBI-QOL items, parameters, and data are © 2015 David Tulsky and Kessler Foundation. All rights reserved. The items are freely available to the public via [email protected], and there are currently no plans for Dr Tulsky or Kessler Foundation to profit from the use of the TBI-QOL instruments. No other authors declare a conflict of interest.
Supported by the National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR) (grant nos. H133G070138, H133A070037, H133A070043, H133A080045, H133A080044, and H133A70038) and the National Institutes of Health (U01AR057929). Additional support for the preparation of this manuscript was provided by NIDILRR (grant no. H133A120100).
Identification
Copyright
© 2019 by the American Congress of Rehabilitation Medicine
