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Factor structure of a conceptual model of oral health tested among 65-year olds in Norway and Sweden
Institute of Clinical Dentistry, Faculty of Medicine and Odontology, University of Bergen, Bergen, Norway.
Institute of Clinical Dentistry, Faculty of Medicine and Odontology, University of Bergen, Bergen, Norway; Department of Dentistry, Örebro County Council, Örebro, Sweden.ORCID iD: 0000-0001-8969-1650
Dental Commissioning Unit, Östergötland County Council, Linköping, Sweden; Department of Oral Public Health, Malmö University, Malmö, Sweden.
2010 (English)In: Community Dentistry and Oral Epidemiology, ISSN 0301-5661, E-ISSN 1600-0528, Vol. 38, no 2, p. 110-119Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: No studies have tested oral health-related quality of life models in dentate older adults across different populations.

OBJECTIVES: To test the factor structure of oral health outcomes within Gilbert's conceptual model among 65-year olds in Sweden and Norway. It was hypothesized that responses to 14 observed indicators could be explained by three correlated factors, symptom status, functional limitations and oral disadvantages, that each observed oral health indicator would associate more strongly with the factor it is supposed to measure than with competing factors and that the proposed 3-factor structure would possess satisfactory cross-national stability with 65-year olds in Norway and Sweden.

METHODS: In 2007, 6078 Swedish- and 4062 Norwegian adults borne in 1942 completed mailed questionnaires including oral symptoms, functional limitations and the eight item Oral Impacts on Daily Performances inventory.

RESULTS: Model generation analysis was restricted to the Norwegian study group and the model achieved was tested without modifications in Swedish 65-year olds. A modified 3-factor solution with cross-loadings, improved the fit to the data compared with a 2-factor- and the initially proposed 3-factor model among the Norwegian [comparative fit index (CFI) = 0.97] and Swedish (CFI = 0.98) participants. All factor loadings for the modified 3-factor model were in the expected direction and were statistically significant at CR > 1. Multiple group confirmatory factor analyses, with Norwegian and Swedish data simultaneously revealed acceptable fit for the unconstrained model (CFI = 0.97), whereas unconstrained and constrained models were statistically significant different in nested model comparison.

CONCLUSIONS: Within construct validity of Gilbert's model was supported with Norwegian and Swedish 65-year olds, indicating that the 14-item questionnaire reflected three constructs; symptom status, functional limitation and oral disadvantage. Measurement invariance was confirmed at the level of factor structure, suggesting that the 3-factor model is comparable to some extent across 65-year olds in Norway and Sweden.

Place, publisher, year, edition, pages
2010. Vol. 38, no 2, p. 110-119
Keywords [en]
Confirmatory factor analysis; Factor structure; Oral health
National Category
Dentistry
Identifiers
URN: urn:nbn:se:oru:diva-42287DOI: 10.1111/j.1600-0528.2009.00522.xISI: 000275511000002PubMedID: 20156235Scopus ID: 2-s2.0-77949431009OAI: oai:DiVA.org:oru-42287DiVA, id: diva2:784641
Note

Funding Agencies:

Norwegian Research Council 156744

Department of Dentistry Orebro County

Dental Commisssioning Unit Ostergotland County, Sweden

University of Bergen

Public Dental Health Services, Norway

Available from: 2015-01-30 Created: 2015-01-30 Last updated: 2018-04-25Bibliographically approved

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