Cardiovascular mortality by gender and age in the State of Paraná, Brazil: 1979 to 1981 and 2006 to 2008

OBJECTIVES: In this epidemiological ecological study, it was compared the mortality from cardiovascular disease in the state of Paraná, between the three-year periods 1979-1981 and 2006-2008. METHODS: Data of cardiovascular deaths occurred in the state of Paraná in the period 1979-2008 were obtained from the Mortality Information System of the Ministry of Health. The magnitude of mortality and the change between the triennium were described using the mortality rates and the relative percentage variation. The Poisson regression model to estimate the change in mortality between the periods was used. RESULTS: During the investigation, it was found, regardless of age and gender, reduction in the occurrence of cardiovascular deaths. In both genders, the mortality rates increased with increasing age. Among men, mortality from ischemic heart disease was higher than for cerebrovascular diseases. CONCLUSION: The decrease in mortality for the group of cardiovascular diseases may mean greater access to services and diagnostic and therapeutic methods.

研究目的：本项流行病学生态学研究，对比了巴拉那州1979-1981年与2006-2008年两个三年周期的心血管疾病（cardiovascular disease）死亡率情况。
研究方法：本研究获取了1979-2008年期间巴拉那州境内发生的心血管疾病死亡数据，数据来源于卫生部死亡率信息系统（Mortality Information System）。本研究通过死亡率与相对百分比变化，描述了该研究时段的死亡率水平以及两个三年周期之间的变化情况，并采用泊松回归模型（Poisson regression model）估算了两个研究时段间的死亡率变化。
研究结果：本次研究发现，无论年龄与性别如何，心血管疾病死亡的发生例数均有所减少。无论男女，死亡率均随年龄增长而升高。在男性群体中，缺血性心脏病的死亡率高于脑血管疾病（cerebrovascular diseases）。
研究结论：心血管疾病群组的死亡率下降，或许意味着医疗服务可及性的提升以及诊断与治疗手段的进步。