title: Validation of self-reported diabetes in a representative sample of São Paulo city.
abstract: OBJECTIVE To validate the self-reported diabetes mellitus in adults and older adults living in the city of São Paulo, Brazil. METHODS We have used data of 569 subjects (284 adults and 285 older adults), participants of the population-based cross-sectional study Inquérito de Saúde do Município de São Paulo (Health Survey of São Paulo). Fasting glucose ≥ 7.0 mmol/L (126 mg/dL) and/or use of drugs (oral hypoglycemic and/or insulin) defined the diagnosis of diabetes mellitus. We have validated the self-reported diabetes mellitus by calculating the sensitivity, specificity, positive predictive values, and negative predictive values. We have used Poisson regression with robust variance to verify the factors associated with the sensitivity of the self-reported datum. For all analyses, we have considered the sample design of the study. RESULTS The sensitivity of self-reported diabetes mellitus was 63.8% (95%CI 49.2-76.3), specificity was 99.7% (95%CI 99.1-99.9), positive predictive value was 95.5% (95%CI 84.4-98.8), and negative predictive value was 96.9% (95%CI 94.9-98.2). The correct reporting of diabetes mellitus was more prevalent among older adults (PR = 2.0; 95%CI 1.2-3.5) than among adults. CONCLUSIONS The use of the datum of self-reported diabetes mellitus is valid, especially among older adults living in the city of São Paulo. The results highlight the need to track diabetes mellitus in asymptomatic subjects who have one or more risk factors for it, mainly in the adult population of this city.
authors.affiliation: Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Mariane de Mello
authors.initials: MM
authors.lastname: Fontanelli
authors.affiliation: Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Juliana Araújo
authors.initials: JA
authors.lastname: Teixeira
authors.affiliation: Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Cristiane Hermes
authors.initials: CH
authors.lastname: Sales
authors.affiliation: Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Michelle Alessandra de
authors.initials: MA
authors.lastname: Castro
authors.affiliation: Departamento do Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Chester Luiz Galvão
authors.initials: CL
authors.lastname: Cesar
authors.affiliation: Instituto de Saúde, Secretaria de Estado da Saúde, São Paulo, SP, Brasil.
authors.forename: Maria Cecilia Goi Porto
authors.initials: MC
authors.lastname: Alves
authors.affiliation: Departamento de Medicina Preventiva, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Moisés
authors.initials: M
authors.lastname: Goldbaum
authors.affiliation: Departamento de Nutrição, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Dirce Maria
authors.initials: DM
authors.lastname: Marchioni
authors.affiliation: Departamento de Nutrição, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Regina Mara
authors.initials: RM
authors.lastname: Fisberg
mesh_terms: D000328:Adult; D017677:Age Distribution; D001786:Blood Glucose / Q000032:analysis; D001938:Brazil / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003920:Diabetes Mellitus / Q000175:diagnosis* / Q000453:epidemiology* / Q000209:etiology; D059026:Diagnostic Self Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D015203:Reproducibility of Results; D012307:Risk Factors; D057566:Self Report / Q000592:standards*; D012680:Sensitivity and Specificity; D017678:Sex Distribution; D012959:Socioeconomic Factors; D055815:Young Adult
chemical_list: D001786:Blood Glucose