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Mortality trends due to circulatory system diseases in Brazil: 1950 to 2000
Eduarda Angela Pessoa Cesse1, Eduardo Freese de Carvalho, Wayner Vieira de Souza
1Departamento de Saúde Coletiva, Centro de Pesquisas Aggeu Magalhães, Fiocruz, Recife, PE, Brasil. educesse@cpqam.fiocruz.br
Insights
Mortality risk from circulatory system diseases (CAD) is decreasing in Brazilian capitals since the 1980s, despite remaining a leading cause of death. This trend reflects broader public health and industrialization patterns across Brazil.
Area of Science:
- Public Health
- Epidemiology
- Demography
Background:
- Circulatory system diseases (CAD) are a major global health concern, representing the leading cause of death.
- While mortality rates are declining in some nations, CAD remains proportionally the top cause of death in Brazil.
Purpose of the Study:
- To analyze the mortality trends associated with circulatory system diseases (CAD) in Brazilian capital cities.
- The study covers the period from 1950 to 2000, examining changes in mortality ratios.
Main Methods:
- A temporal series study was conducted using Standardized Mortality Ratios (SMRs) for CAD.
- Secondary data on mortality were sourced from the Brazilian Institute of Geography and Statistics (IBGE) and the Mortality Information System.
- Linear trend analysis was applied to SMRs in Brazilian capital cities with complete mortality data for census years between 1950 and 2000.
Main Results:
- Despite CAD being the primary cause of death and showing a proportional increase during the study period, the risk of death (SMRs) has decreased, particularly from the 1980s onwards.
- Several major cities, including Fortaleza, Salvador, Belo Horizonte, Rio de Janeiro, and São Paulo, exhibited high SMRs but demonstrated a significant decreasing trend (p<0.05 and p<0.10) throughout the analyzed period.
Conclusions:
- The declining mortality risk from CAD suggests it is an early-onset disease associated with industrialization and urbanization.
- Cities like São Paulo and Rio de Janeiro, with earlier and more extensive development, experienced this pattern first, aligning with historical trends observed in other industrialized nations.
Background:
The circulatory system diseases (CAD), one of the most important current health problems, have started to show a declining trend in mortality in several countries, although they are still proportionally the number one regarding the statistics of morbimortality.
Objective:
To analyze the mortality trend due to CAD in Brazilian capital cities, during the period of 1950 to 2000.
Methods:
Temporal series study, of Standardized Mortality Ratios by CAD. We used secondary data on death from the statistical annual reports from IBGE (the Brazilian Institute of Geography and Statistics) and from the Mortality Information System. We carried out a linear trend analysis of the Standardized Mortality Ratios due to CAD in the Brazilian capital cities that presented complete mortality series, considering the census years during the study period (1950 to 2000).
Results:
Although proportionally the CAD represent the main cause of death in the Brazilian population, as well as presenting a proportional increase during the period of analysis of this study, the risk of death, represented by the Standardized Mortality Ratios, have been decreasing, particularly from the eighties onward. It is noteworthy the fact that Fortaleza, Salvador, Belo Horizonte, Rio de Janeiro and São Paulo presented elevated Standardized Mortality Ratios, however with a decreasing trend (p<0.05 and p<0.10), since the start of the analyzed period.
Conclusion:
The behavior of the risk of death due to CAD suggests that this group of diseases is the first to be established, following the increase in industrialization observed from the thirties onward and after the Second World War in Brazil, as it occurred in Sao Paulo and Rio de Janeiro, cities that historically experienced a process of development and urbanization earlier and at a higher extent, when compared to the other capital cities.
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