Indicadores antropométricos de obesidade como preditores de pressão arterial elevada em idosos

Abstract

-High blood pressure is a leading cause of mortality worldwide and a risk factor for several diseases. The aim of this study was to determine the predictive power of anthropometric indicators of obesity and establish their cutoff points as discriminators of hypertension and identify the anthropometric indicator of obesity that best discriminates high blood pressure in the elderly. This is a cross-sectional study with a sample of 300 older adults, 167 (56.5%) women. The following anthropometric indicators of obesity were measured: body mass index (BMI), waist circumference (WC), waist / height ratio (WHtR) and conicity index. Moreover, systolic and diastolic blood pressure measurements were collected. To identify hypertension predictors, the analysis of receiver operating curves (ROC) with 95% confidence interval was adopted. Subsequently, cutoff points with their respective sensitivities and specificities were identified. Analyses were carried out considering 5% significance level. It was observed that some anthropometric indicators of obesity showed area under the curve (AUC) significant with BMI = 0.60 (0.50 to 0.70); WHtR = 0.61 (0.51 to 0.71); conicity index = 0.58 (0.58 to 0.68) in men. The different cutoff points of anthropometric indicators with better predictive power and their respective sensitivities and specificities were identified. The best areas under the ROC curve were for BMI, WHtR and conicity index for men; however, such measures were not satisfactory to predict high blood pressure in women.Key words: Anthropometry; Older adults; Obesity; Arterial Pressure. 167 (56,5%) = 0,60 (0,50-0,70); RCEst = 0,61 (0,71); Índice Conicidade = 0,58 (0,68) Resumo -A pressão arterial elevada é uma das principais causas de mortalidade em âmbito mundial e fator de risco para diversas doenças. Objetivou-se determinar o poder preditivo de indicadores antropométricos de obesidade e estabelecer os pontos de corte como discriminadores de pressão arterial elevada e identificar o indicador antropométrico de obesidade que melhor discrimina a pressão arterial elevada em idosos. Estudo transversal com amostra de 300 idosos, sendo