Validity of self‐reported oral conditions among Brazilian older women: Do socio‐economic factors matter?

Abstract

AbstractObjectiveTo validate the level of agreement between self‐report and clinical examination for oral conditions and evaluate the effect of sociodemographic conditions on the validity of self‐report among women aged 60 and older.MethodsA cross‐sectional study was conducted in a social community center for seniors in Southern Brazil. Sociodemographic data (age, level of education, and income) were measured. Participants were interviewed and clinically examined for the number of teeth (DMF‐T index) and the use of dental prostheses. The self‐reported number of teeth in each arch and the use of dental prostheses were gathered through interviews. The level of agreement was estimated using the observed agreement, Kappa statistics, sensitivity/specificity (edentulism/prostheses) and Lin's concordance correlation coefficient, and related tests (number of teeth). The validity of the oral conditions was estimated according to sociodemographic information.ResultsNinety‐nine women participated in the study. High levels of agreement were observed for edentulism (97.8%; 95%CI 92.8;99.7; Kappa 0.947) and the use of dental prostheses (97.0%; 95%CI 91.3;99.4; Kappa 0.922). In both conditions, despite achieving similar concordance correlation coefficients (ranging from weak to moderate), the mean number of upper teeth was lower in clinical examination (7.1 ± 5.2) compared with self‐reported (8.6 ± 3.6), while the opposite was observed for lower teeth (clinical examination: 9.1 ± 3.4; self‐reported: 6.6 ± 5.3). Larger differences were found among women of low income and educational levels.ConclusionsOur findings suggest that the participants' socio‐economic position might influence their self‐reported number of teeth.