IJCS | Volume 31, Nº3, May/ June 2018

252 Santos et al. Mortality due to hypertensive diseases in Brazil International Journal of Cardiovascular Sciences. 2018;31(3)250-257 Original Article Results The progressive increase in age was associated with an increase in the mean number of deaths related to hypertensive diseases between the years 2010 and 2014. In the age groups between 50-59 years, 60-69 years, 70- 79 years and 80 or more years, the mean and standard deviation for themortality rate were, respectively: 15.11% (35.35); 24.14% (55.34); 35.07% (81.03) and 57.87% (139.08). In the graphic representation of the binomial regression model extended to longitudinal data (Figure 1), adjusted to age, higher incidence rate ratios can be observed in the southeast and northeast regions, compared to the south, north and center-west regions. According to IBGE’s population estimates for each year and state, 11 the global mortality rate related to hypertensive diseases was calculated per 10,000 inhabitants, between 2010 and 2014, which varied between regions: north (1.25); northeast (2.69); center- west (2.06); southeast (2.48) and south (2.04). Table 1 shows the numbers per year and region. It is possible to observe clearly, on the map of Brazil, the regions with the highest mortality rates related to hypertensive diseases in the year of 2014, as well as the regions with the lowest rates (Figure 2). The analysis per state showed that Rio de Janeiro had the highest mean, with 3.66% of deaths associated with hypertensive diseases in the year of 2010, progressively decreasing until the year 2014, with a mean of 3.02% in that same year. On the other hand, in the years 2011, 2012, 2013 and 2014, the state of Piauí had the highest death average compared to the other states, with 3.80%, 3.58%, 3.87% and 3.61%, respectively (Table 2). The highest death rates occurred in the southeastern and northeastern regions of Brazil. In the period of 2010 to 2014, The Federal District presented mortality rates similar to the state of Goiás, except for the year 2012, which showed one of the lowest death rates in the country. A predictive model for fatality rates was estimated (Table 3). There were no sex differences in mortality, when adjusted to the other predictors. In relation to the Figure 1 - Graphical representation of the binomial regression model extended for longitudinal data, with incidence rate ratio adjusted to age group and in accordance with Brazilian regions, in the period from 2010 to 2014. Incidence rate ratio NORTH NORTHEAST CENTRAL-WEST SOUTHEAST SOUTH Region 50-59 years old 70-79 years old 60-69 years old ≥ 80 years old