This highly successful guide, now in its firth edition with sales in excess of 26,000, is essential reading for all those requiring a basic understanding of epidemiology–the study of how often and why diseases occur in different groups of people. Assuming no prior knowledge of the subject, it guides the novice through both the theory and practical pitfalls with the aid of familiar examples. Subjects covered include: What is Epidemiology? Quantifiying Disease in Populations Comparing Disease Rates Measurement Error and Bias Planning and Conducting a Survey Ecological Studies Longitudinal Studies Case–control and Cross Sectional Studies Experimental Studies Screening Outbreaks of Disease Reading Epidemiolgical Reports This concise and readable book, now revised and updated, is an invaluable tool for all health care professionals and medical students whether...

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