Supplemented throughout by appropriate examples and helpful hints, this practical guide to the design, conduct, analysis and interpretation of epidemiological s

In the late 1980s, the National Cancer Institute initiated an investigation of cancer risks in populations near 52 commercial nuclear power plants and 10 Depart

A basic textbook addressed to medical and public health students, clinicians, health professionals, and all others seeking to understand the principles and meth

This book presents a logical system of critical appraisal, to allow readers to evaluate studies and to carry out their own studies more effectively. This system

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