Sensitivity and specificity in the diagnosis of hypertension with different methods

• Autor(a) principal: Nascimento, Larissa Rangel
• Data de Publicação: 2011
• Outros Autores: Coelli, Anna Paula, Cade, Nágela Valadão, Mill, José Geraldo, Molina, Maria del Carmen Bisi
• Tipo de documento: Artigo
• Idioma: por; eng
• Título da fonte: Revista de Saúde Pública
• Texto Completo: https://www.revistas.usp.br/rsp/article/view/33026
• topic: Hypertension; diagnosis; Diagnostic Techniques and Procedures; Sensitivity and Specificity; Cross-Sectional Studies; Hipertensão; diagnóstico; Técnicas e Procedimentos Diagnósticos; Sensibilidade e Especificidade; Estudos Transversais; Hipertensión; diagnóstico; Técnicas y Procedimientos Diagnósticos; Sensibilidad y Especificidad; Estudios Transversales

OBJECTIVE: To evaluate sensitivity and specificity of different protocols for blood pressure measurement for the diagnosis of hypertension in adults. METHODS: Cross-sectional study conducted in a non-probabilistic sample of 250 public servants of both sexes aged 35 to 74 years in Vitória, southeastern Brazil, between 2008 and 2010. The participants had their blood pressure measured using three different methods: clinic measurement, self-measured and 24-hour ambulatory measurement. They were all interviewed to obtain sociodemographic information and had their anthropometric data (weight, height, waist circumference) collected. Clinic measurement and self-measured were analyzed against the gold standard ambulatory measurement. Measures of diagnostic performance (sensitivity, specificity, accuracy and positive and negative predictive values) were calculated. The Bland & Altman method was used to evaluate agreement between ambulatory measurement (standard deviation for daytime measurements) and self-measured (standard deviation of four measurements). A 5% significance level was used for all analyses. RESULTS: Self-measured blood pressure showed higher sensitivity (S=84%, 95%CI 75;93) and overall accuracy (0.817, p