This textbook describes the most common biostatistical measures used in epidemiology, methods of comparing rates, and methods for assessing the accuracy of epidemiologic findings. Oleckno (Northern Illinois University) compares the strengths and weaknesses of ecological, cross-sectional, case control, and cohort studies. The instructor's CD-ROM contains applets for solving epidemiologic problems. Annotation c. Book News, Inc., Portland, OR (booknews.com)