Abstract
Objective
Reliable and valid instruments for measuring health beliefs related to arthritis and
total joint arthroplasty (TJA) are lacking. The present study examined the factorial
invariance of an Arthritis-related Health Belief Instrument (AHBI) that measures four
constructs: severity of arthritis, susceptibility of arthritis to get worse, and perceived
benefits and barriers of TJA.
Study Design and Setting
In an urban primary care clinic setting, African-American (AA) and White (W) patients
(n=664) with at least a moderately severe degree of osteoarthritis completed the AHBI.
For the cross-sectional data on the first 120 enrolled participants, exploratory factor
analysis was performed to derive the initial factor structures. For the remaining
544 participants, single-group and multi-group confirmatory factor analyses (CFA)
were performed to assess factorial invariance.
Results
The CFA analyses revealed that a four-factor model was invariant across race.
Conclusion
The findings of invariance across race support the use of the AHBI to measure ethnic
group differences in health beliefs as they relate to arthritis and TJA. Future analyses
should continue to assess other aspects of reliability and validity of the AHBI.
Keywords
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Article info
Publication history
Published online: September 14, 2007
Accepted:
May 12,
2007
Identification
Copyright
© 2008 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
