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Construct Validity of the Holistic Complementary and Alternative Medicines Questionnaire (HCAMQ)—An Investigation Using Modern Psychometric Approaches
Joint Authors
Tennant, A.
White, P. J.
Kersten, Paula
Source
Evidence-Based Complementary and Alternative Medicine
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-01-11
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The scientific basis of efficacy studies of complementary medicine requires the availability of validated measures.
The Holistic Complementary and Alternative Medicine Questionnaire (HCAMQ) is one such measure.
This article aimed to examine its construct validity, using a modern psychometric approach.
The HCAMQ was completed by 221 patients (mean age 66.8, SD 8.29, 58% females) with chronic stable pain predominantly from a single joint (hip or knee) of mechanical origin, waiting for a hip (40%) or knee (60%) joint replacement, on enrolment in a study investigating the effects of acupuncture and placebo controls.
The HCAMQ contains a Holistic Health (HH) Subscale (five items) and a CAM subscale (six items).
Validity of the subscales was tested using Cronbach alpha's, factor analysis, Mokken scaling and Rasch analysis, which did not support the original two-factor structure of the scale.
A five-item HH subscale and a four-item CAM subscale (worded in a negative direction) fitted the Rasch model and were unidimensional (χ2=8.44, P=0.39, PSI=0.69 versus χ2=17.33, P=0.03, PSI=0.77).
Two CAM items (worded in the positive direction) had significant misfit.
In conclusion, we have shown that the original two-factor structure of the HCAMQ could not be supported but that two valid shortened subscales can be used, one for HH Beliefs (four-item HH), and the other for CAM Beliefs (four-item CAM).
It is recommended that consideration is given to rewording the two discarded positively worded CAM questions to enhance construct validity.
American Psychological Association (APA)
Kersten, Paula& White, P. J.& Tennant, A.. 2011. Construct Validity of the Holistic Complementary and Alternative Medicines Questionnaire (HCAMQ)—An Investigation Using Modern Psychometric Approaches. Evidence-Based Complementary and Alternative Medicine،Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-468836
Modern Language Association (MLA)
Kersten, Paula…[et al.]. Construct Validity of the Holistic Complementary and Alternative Medicines Questionnaire (HCAMQ)—An Investigation Using Modern Psychometric Approaches. Evidence-Based Complementary and Alternative Medicine No. 2011 (2011), pp.1-8.
https://search.emarefa.net/detail/BIM-468836
American Medical Association (AMA)
Kersten, Paula& White, P. J.& Tennant, A.. Construct Validity of the Holistic Complementary and Alternative Medicines Questionnaire (HCAMQ)—An Investigation Using Modern Psychometric Approaches. Evidence-Based Complementary and Alternative Medicine. 2011. Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-468836
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-468836