Abstract

In this study the theory of risk factors is discussed. The risk-concept is essential in cardiology and is, furthermore, important not only in medicine in general, but also and particularly in ecology. Since environmental risk factors endanger our health, ecological risks have to be taken as medical problems. If a factor or a set of factors is a necessary but not a sufficient condition for a disease we speak of a risk factor or of risk factors. Statistical analysis of risk factors can be performed by multivariate methods. A method which is particularly useful for finding the most important of a set of risk factors, is discriminant analysis.