This book provides an introduction to epidemiological research and statistical methods covering key concepts and all the main types of epidemiological study. It elicits a critical understanding of the purpose and context of quantitative research including the basis for selecting appropriate research designs from a thorough grounding in the uses and methods of epidemiology; key statistical concepts and techniques needed for the basic analysis of data; critical evaluation of statistical and epidemiological techniques in health research. The book has been designed around a number of core published information dealing with various topics from the United Kingdom, Europe and the low- and middle-income countries. These studies have been chosen to introduce you to a wide range of study methods. The main intriguing aspects of their design provide examples which are used to help you understand the fundamental principles of good research, and to practise these techniques yourself. The topics covered in this book include the following: scientific method and introductory concepts; routine data sources and descriptive epidemiology; surveys; cohort studies; case-control studies; and critical appraisal of research evidence. This book will be an invaluable resource for health professionals, researchers, statisticians, data scientists, health programmers, policymakers, medical students, graduate and postgraduate students in public health and related disciplines.