Prevalence of and factors associated with self-reported high blood pressure in Brazilian adults

OBJECTIVE: To analyze factors associated with self-reported high blood pressure among adults in Brazilian state capitals. METHODS: The study uses data from Sistema de Vigilancia de Fatores de Risco e Protecao para Doencas Cronicas por Inquerito Telefonico (Vigitel - Surveillance System of Risk and Protection Factors of Noncommunicable Diseases by Telephone Survey) collected in 2013. Prevalence rates and their respective 95% confidence intervals by gender were estimated according to sociodemographic variables, lifestyle, reported noncommunicable diseases and self-rated health status. Multivariate logistic regression modeling was used to identify variables associated with self-reported high blood pressure with alpha < 0.05. RESULTS: Prevalence of self- reported high blood pressure among adults living in Brazilian state capitals and the Federal District was 24.1%. The following variables were associated with self- reported high blood pressure: age group, taking 18-24 as reference (all age groups presented increased risk - from 25-34 years [OR = 2.6; 95%CI 2.0-3.4] up to 65 years or more [OR = 28.1; 95%CI 21.7-36.4]); low education level (9 to 11 years of study [OR = 0.8; 95%CI 0.7-0.9] and 12 years or more [OR = 0.6; 95%CI 0.6-0.7]); Black race or skin color (OR = 1.3; 95%CI 1.1-1.5); being a former smoker (OR = 1.2; 95%CI 1.1-1.3); obesity (OR = 2.7; 95%CI 2.4-3.0); diabetes (OR = 2.9; 95%CI 2.5-3.5%), and high cholesterol (OR = 1.9; 95%CI 1.8-2.2). CONCLUSIONS: Approximately one quarter of the adult population living in Brazilian state capitals reported having high blood pressure. Information from Vigitel is useful to monitor high blood pressure and identity its associated factors, supporting public policies for health promotion, surveillance and care.