title: The Oral Health Impact Profile-14: a unidimensional scale?
abstract: The aim of this study was to investigate the dimensional structure of the Oral Health Impact Profile-14: (OHIP-14). Data was obtained from studies carried out in Rio de Janeiro (N = 504) and Carlos Barbosa (N = 872), in the State of Rio Grande do Sul, Brazil. Exploratory factor analysis (EFA) was performed to identify the latent dimensions of the OHIP-14. Confirmatory factor analysis (CFA) was carried out of both samples to compare the one-dimensional structure found by the EFA and the proposed three-dimensional structure. This factorial structure was assessed using goodness-of-fit indices. In the Rio de Janeiro study, the eigenvalue was 9.2 and this one factor explained 65.6% of total variance, while in the Carlos Barbosa study the eigenvalue was 7.9 and this one factor explained 56.6% of variance. CFA indicated an adequate fit of the one-factor model for the Rio de Janeiro study (RMSEA = 0.04; CFI = 0.98; TLI = 0.98) and for the Carlos Barbosa study (RMSEA = 0.05; CFI = 0.97; TLI = 0.97). Our findings suggest that the OHIP-14 measures one single construct.
authors.affiliation: Faculdade de Odontologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil. camilastaas@gmail.com
authors.forename: Camila Mello dos
authors.initials: CM
authors.lastname: Santos
authors.forename: Branca Heloisa de
authors.initials: BH
authors.lastname: Oliveira
authors.forename: Paulo
authors.initials: P
authors.lastname: Nadanovsky
authors.forename: Juliana Balbinot
authors.initials: JB
authors.lastname: Hilgert
authors.forename: Roger Keller
authors.initials: RK
authors.lastname: Celeste
authors.forename: Fernando Neves
authors.initials: FN
authors.lastname: Hugo
mesh_terms: D001938:Brazil; D003430:Cross-Sectional Studies; D005163:Factor Analysis, Statistical; D006801:Humans; D008962:Models, Theoretical; D009909:Oral Health; D011788:Quality of Life; D012647:Self-Assessment; D011795:Surveys and Questionnaires