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Factor structure and measurement invariance of the Health Education Impact Questionnaire: does the subjectivity of the response perspective threaten the contextual validity of inferences?

Elsworth, Gerald R., Nolte, Sandra and Osborne, Richard H. 2015, Factor structure and measurement invariance of the Health Education Impact Questionnaire: does the subjectivity of the response perspective threaten the contextual validity of inferences?, SAGE open medicine, vol. 3, January-December, pp. 1-13, doi: 10.1177/2050312115585041.

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Title Factor structure and measurement invariance of the Health Education Impact Questionnaire: does the subjectivity of the response perspective threaten the contextual validity of inferences?
Author(s) Elsworth, Gerald R.
Nolte, Sandra
Osborne, Richard H.ORCID iD for Osborne, Richard H. orcid.org/0000-0002-9081-2699
Journal name SAGE open medicine
Volume number 3
Season January-December
Start page 1
End page 13
Total pages 13
Publisher Sage
Place of publication London, Eng.
Publication date 2015-01
ISSN 2050-3121
Keyword(s) Health program evaluation
Construct validation
measurement invariance
patient self-report measure
Health Education Impact Questionnaire
Summary Objective:
On-going evidence is required to support the validity of inferences about change and group differences in the
evaluation of health programs, particularly when self-report scales requiring substantial subjectivity in response generation are used as outcome measures. Following this reasoning, the aim of this study was to replicate the factor structure and investigate the measurement invariance of the latest version of the Health Education Impact Questionnaire, a widely used health program evaluation measure.
Methods:
An archived dataset of responses to the most recent version of the English-language Health Education Impact
Questionnaire that uses four rather than six response options (N=3221) was analysed using exploratory structural equation
modelling and confirmatory factor analysis appropriate for ordered categorical data. Metric and scalar invariance were
studied following recent recommendations in the literature to apply fully invariant unconditional models with minimum
constraints necessary for model identification.
Results:
The original eight-factor structure was replicated and all but one of the scales (Self Monitoring and Insight) was
found to consist of unifactorial items with reliability of ⩾0.8 and satisfactory discriminant validity. Configural, metric and scalar
invariance were established across pre-test to post-test and population sub-groups (sex, age, education, ethnic background).
Conclusion:
The results support the high level of interest in the Health Education Impact Questionnaire, particularly for use as a pre-test/post-test measure in experimental studies, other pre–post evaluation designs and system-level monitoring and evaluation.
Language eng
DOI 10.1177/2050312115585041
Field of Research 111709 Health Care Administration
Socio Economic Objective 920401 Behaviour and Health
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Sage
Persistent URL http://hdl.handle.net/10536/DRO/DU:30074626

Document type: Journal Article
Collection: School of Health and Social Development
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