Studies observing people
Ask for Evidence’ explanation of ‘observational’ studies.Key Concepts addressed:
Studies observing people (sometimes called population, observational or epidemiological studies)
Epidemiologists (a kind of scientist) study how often diseases occur in different groups of people, and why. Their studies on populations will often report an association between a substance or behaviour and a disease, and this will be described by journalists as a ‘link’ – ‘red wine linked to cancer’ for example.