Health and life chances aren't distributed equally. On average, people from poorer backgrounds have significantly higher rates of illness than people from professional classes. So what might be causing these health inequalities? To explore big questions like this, health researchers need to be able to gather large amounts of information and accurately interpret it. In this excellent program we examine three key ways of gathering information and look at how to get the most accurate results from them. Featuring chapters on Questionnaire surveys, Using interviews in health research and Observational research, this is a practical and informative program for health students everywhere.