Exploratory factor analysis of the Oral Health Impact Profile
2014 (English)In: Journal of Oral Rehabilitation, ISSN 0305-182X, E-ISSN 1365-2842, Vol. 41, no 9, 635-643 p.Article in journal (Refereed) Published
Although oral health-related quality of life (OHRQoL) as measured by the Oral Health Impact Profile (OHIP) is thought to be multidimensional, the nature of these dimensions is not known. The aim of this report was to explore the dimensionality of the OHIP using the Dimensions of OHRQoL (DOQ) Project, an international study of general population subjects and prosthodontic patients. Using the projects Learning Sample (n = 5173), we conducted an exploratory factor analysis on the 46 OHIP items not specifically referring to dentures for 5146 subjects with sufficiently complete data. The first eigenvalue (27.0) of the polychoric correlation matrix was more than ten times larger than the second eigenvalue (2.6), suggesting the presence of a dominant, higher-order general factor. Follow-up analyses with Horns parallel analysis revealed a viable second-order, four-factor solution. An oblique rotation of this solution revealed four highly correlated factors that we named Oral Function, Oro-facial Pain, Oro-facial Appearance and Psychosocial Impact. These four dimensions and the strong general factor are two viable hypotheses for the factor structure of the OHIP.
Place, publisher, year, edition, pages
Wiley: 12 months , 2014. Vol. 41, no 9, 635-643 p.
oral health-related quality of life; Oral Health Impact Profile; dimensions; factor structure; exploratory factor analysis
IdentifiersURN: urn:nbn:se:liu:diva-119187DOI: 10.1111/joor.12192ISI: 000342799500001PubMedID: 24909881OAI: oai:DiVA.org:liu-119187DiVA: diva2:820389
Funding Agencies|National Institute of Dental and Craniofacial Research of the National Institutes of Health [R01DE022331]2015-06-122015-06-112015-07-01