The case-control method of determining human cancer causation has developed in the last 20 years as the major epidemiological approach to identify risk factors. Now in paperback, this volume brings together the methods available for analyzing case-control data, and makes them accessible to the practicing epidemiologist and statistician. It expounds both the statistical models and theory behind the methods, and the practical steps of applying them to specific sets of data. All the methods are illustrated with examples from real studies, with an emphasis on the added insight into the data that different approaches can bring.