Institutional Survey of Morbidity and Mortality by Cardiovascular Diseases with 20 Years Follow Up

Abstract
Reduction of mortality rate due to cardiovascular disease (CVD) is being attained obtained through lifestyle changes and risk factor modifications. A better understanding of these factors and their evolution by means of an institutional survey on CVD morbility and mortality will make prevention and control interventions easier. Methods: Factors as age, smoking, blood pressure, blood glucose level and cardiovascular events were assessed on a closed group of 1 240 electricity workers of both sexes, aged 18 to 59 years, who were followed for 20 years. Actuarial curves were constructed and morbimortality rates were calculated in relation with cardiovascular events. Results: Chances of being free of any fatal event was 96.9 ± 0.1. Mortality coefficient showed an increase in age ranges of 50-59 years and 60 years or older. The main causes of morbidity and mortality were CVD, with 40.9% prevalence. CVD mortality coefficient was lower than general mortality, except for the age range of 60 years or older, where the two causes of mortality overlapped. In that age range, CVD morbidity raised considerably. Main diseases were coronary artery disease (CAD) and cerebrovascular accidents (CVA). Risk factors as high blood pressure and smoking were associated with CAD, and diabetes mellitus was associated with CVA. Conclusions: Cardiovascular disease is the primary cause of morbimortality as shown by population and institutional surveys like the present one.

Key words
cardiovascular disease, institutional survey, morbidity, mortality

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