title: Validation of a measuring instrument for the perception of oral health in women.
abstract: The aim of this study was to estimate the reliability, validity and factorial invariance of the Portuguese version of the Geriatric/General Oral Health Assessment Index (GOHAI) as applied to Brazilian women. A total 701 women over 18 years of age participated in this study. Telephone interviews were conducted. We evaluated the construct-related validity through factorial, convergent and discriminant validity. We carried out a confirmatory factor analysis using the χ2/df, CFI, GFI and RMSEA indexes. The invariance of the model in a second independent sample was estimated by multi-group analysis and internal consistency using Cronbach's alpha coefficient. Items 5 and 9 presented factor weights below the adequate value and were removed. The three-dimensional and unifactorial model presented an adequate fit. We observed strong factorial invariance of the models in two independent samples (three-factor: ρλ = 0.62; pCov = 0.89, one-factor: ρλ = 0.81; pCov = 0.68) and weak factorial invariance between users and nonusers of dental prosthetics (three-factor: ρλ = 0.55; pCov = 0.01, one-factor: ρλ = 0.51; pCov = 0.02). The convergent validity was suboptimal. Internal consistency was adequate. The GOHAI applied to the study sample showed adequate reliability, factorial validity and stability in independent samples and between users and nonusers of dental prosthetics in both the three-dimensional and the unifactorial structures.
authors.affiliation: Department of Social Dentistry, Araraquara School of Dentistry, Univ Estadual Paulista, Araraquara, SP, Brazil.
authors.forename: Juliana Alvares Duarte Bonini
authors.initials: JA
authors.lastname: Campos
authors.affiliation: Department of Food and Nutrition, School of Pharmaceutical Sciences, Univ Estadual Paulista, Araraquara, SP, Brazil.
authors.forename: Andréa Corrêa
authors.initials: AC
authors.lastname: Carrascosa
authors.affiliation: Department of Social Dentistry, Araraquara School of Dentistry, Univ Estadual Paulista, Araraquara, SP, Brazil.
authors.forename: Miriane Lucindo
authors.initials: ML
authors.lastname: Zucoloto
authors.affiliation: Unidade de Investigação em Psicologia e Saúde, Instituto Superior de Psicologia Aplicada, Lisboa, Portugal.
authors.forename: João
authors.initials: J
authors.lastname: Maroco
mesh_terms: D000328:Adult; D001938:Brazil; D016009:Chi-Square Distribution; D003753:Dental Health Surveys / Q000379:methods*; D005260:Female; D006801:Humans; D007407:Interviews as Topic; D007802:Language; D008875:Middle Aged; D009909:Oral Health / Q000706:statistics & numerical data*; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D012649:Self Concept; D011795:Surveys and Questionnaires / Q000592:standards*