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Confirmatory factor analysis of the Oral Health Impact Profile
University of Minnesota, USA.
University of Minnesota, USA.
University of Minnesota, MN 55455 USA.
Showa University, Japan.
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2014 (English)In: Journal of Oral Rehabilitation, ISSN 0305-182X, E-ISSN 1365-2842, Vol. 41, no 9, 644-652 p.Article in journal (Refereed) Published
Abstract [en]

Previous exploratory analyses suggest that the Oral Health Impact Profile (OHIP) consists of four correlated dimensions and that individual differences in OHIP total scores reflect an underlying higher-order factor. The aim of this report is to corroborate these findings in the Dimensions of Oral Health-Related Quality of Life (DOQ) Project, an international study of general population subjects and prosthodontic patients. Using the projects Validation Sample (n = 5022), we conducted confirmatory factor analyses in a sample of 4993 subjects with sufficiently complete data. In particular, we compared the psychometric performance of three models: a unidimensional model, a four-factor model and a bifactor model that included one general factor and four group factors. Using model-fit criteria and factor interpretability as guides, the four-factor model was deemed best in terms of strong item loadings, model fit (RMSEA = 0.05, CFI = 0.99) and interpretability. These results corroborate our previous findings that four highly correlated factors - which we have named Oral Function, Orofacial Pain, Oro-facial Appearance and Psychosocial Impact - can be reliably extracted from the OHIP item pool. However, the good fit of the unidimensional model and the high interfactor correlations in the four-factor solution suggest that OHRQoL can also be sufficiently described with one score.

Place, publisher, year, edition, pages
Wiley: 12 months , 2014. Vol. 41, no 9, 644-652 p.
Keyword [en]
oral health-related quality of life; Oral Health Impact Profile; dimensions; factor structure; confirmatory factor analysis
National Category
URN: urn:nbn:se:liu:diva-119188DOI: 10.1111/joor.12191ISI: 000342799500002PubMedID: 24909797OAI: diva2:820388

Funding Agencies|National Institute of Dental and Craniofacial Research of the National Institutes of Health [R01DE022331]

Available from: 2015-06-12 Created: 2015-06-11 Last updated: 2015-07-01

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