Epidemiology for the UninitiatedThis 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? Quantifying