Age, Cohort and Period Effects in the Mortality by Ischemic Heart Diseases and Ill-Defined Causes of Death

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Gláucia Maria Moraes de Oliveira, Carlos Henrique Klein, Nelson Albuquerque de Souza e Silva. Todos os autores são membros da lista AMICOR e Dra. Gláucia é editora da Revista da SOCERJ
Objective: To analyze the mortality due to ischemic heart diseases (IHD) and ill-defined causes (IDC) in the Brazilian states of Rio de Janeiro (RJ), São Paulo (SP), and Rio Grande do Sul (RS) Brazil, according to the age-cohort-period model, in 1980, 1990, and 2000.
Methods: Mortality due to IHD and IDC from 8 birth cohorts, 1901-10, 1911-20, 1921-30, 1931-40, 1941-50, 1951-60, 1961-80 and 1971-80, were estimated for 6 age groups (20- 29; 30-39; 40-49; 50 -59; 60 -69; 70-79 years), in 1980, 1990 and 2000, in RJ, SP, and RS for both sexes.
The annual deaths data were collected from DATASUS, while the population data were collected from IBGE. The HD mortality was balanced for the ill-defined deaths.
Results: Mortality due to IHD was higher in RJ for both sexes in 1980 and 1990 except for the 70-79 women’s age group. In the year of 2000 the IHD
mortality was also higher in RJ for the male 20-29 and 40-49 age groups and in nearly all female age groups. It has decreased in all Brazilian states for the 30-79 age groups in the past few years. The age effect on IHD and IDC mortality was present in all Brazilian states and age groups. The cohort effect on IHD mortality rates was observed in SP and RS for both sexes from the 30-39 age group with lower magnitude in RJ. The period effect occurred in RJ with a decline in mortality due to IHD in 2000, and with an increase due to IDC in 1990 and 2000, and in RS there was a drop in both
mortality rates.
Conclusions: In RJ mortality due to IHD apparently dropped while mortality due to IDC increased sharply in 2000; however, in RS mortality due to IHD and IDC declined in 1990 and 2000. Hypotheses was raised to explain these findings. Efeitos de Idade, Geração e Período na Mortalidade por
Doenças Isquêmicas do Coração e por Causas Mal Definidas nos Estados do Rio de Janeiro, São Paulo e Rio Grande do Sul nos Anos de 1980, 1990 e 2000 - Brasil Age, Cohort and Period Effects in the Mortality by Ischemic Heart Diseases and Ill-Defined Causes of Death in the States of Rio de Janeiro, São Paulo, and Rio Grande do Sul In 1980, 1990, and 2000 - Brazil