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[From the MONICA-project via KORA to the NAKO-study: Practical Utility of Epidemiological Studies in Augsburg Region].

The objective of the WHO-MONICA study was to determine the influence of changing risk factors and treatment options on myocardial infarction rates in populations in a 10-year time period. For this purpose, a population-based myocardial infarction registry was established in 1984 in Augsburg (covering the city of Augsburg and 2 adjacent counties) in order to continuously register all inhabitants of the region who had a myocardial infarction during the study period. In addition, three cross-sectional studies based on random population samples (1984/85, 1989/90 and 1994/95) were carried out. Our data revealed a continuous decrease of myocardial infarction incidence and demonstrated that the decrease of coronary mortality can be ascribed to decreasing myocardial infarction incidence and longer survival after myocardial infarction. Until today the myocardial infarction registry continues to be a permanent part of the Cooperative Health Research in the Region of Augsburg (KORA). Moreover, within the framework of KORA, a fourth population-based cross-sectional study was carried out in 1999/2001. Meanwhile, more than 18 000 study participants have been followed-up for specific endpoints for up to 30 years. A large number of publications, which address cardiovascular diseases, type 2 diabetes mellitus, lung diseases, environmental and genetic questions, health services research and numerous other topics, are based on the KORA study. Today we know that the development of chronic diseases can be ascribed to a complex interaction of social factors, health policy conditions, health behavior, risk factors and molecular mechanisms. To tackle the challenges posed by these multiple factors in Germany, NAKO (Nationale Kohorte), the largest nation-wide long-term study so far, was initiated. Within the framework of the NAKO study, 200 000 persons aged between 20 and 69 years in Germany - thereof 20 000 persons in the region of Augsburg - will be examined and interviewed in the next 10 years, and widespread diseases will be investigated with modern epidemiological methods. The results of these epidemiological long-term studies will contribute to the prevention, early diagnosis and best possible treatment of widespread diseases.