This book complements the first volume in the series, on case-control studies, and the two together provide a comprehensive account of the analysis of the major types of study in cancer epidemiology. In addition, this volume has a chapter on study design, covering both the case-control and cohort approach. The scope ranges from an account of the elementary and descriptive approaches to cohort analysis to the fitting of regression models for incidence rates with general risk functions. Particular attention is given to the use of a case-control approach embedded in a cohort study. As in the first volume, all the methods described are illustrated by examples from real studies, and the data from these studies are provided in appendices to enable the reader to go through the computations themselves. The book is intended for the medical epidemiologist with an interest in the quantitative aspects of the subject, and the statistician who is looking for a reasonably complete development of the statistical concepts and methods in current use in this area of epidemiology, as well as medical epidemiologists; statisticians; oncologists; students in biostatistics and related fields.