Translations:Advanced Field Epi:Manual 1 - Disease Investigation/304/en
Defining groups based on outcome and exposure
The general purpose of field observational studies is usually to collect data on a number of animals with a particular focus on disease status (presence of disease = case, absence of disease = non-case), and on the presence or absence of one or more risk factors. We can then compare the diseased group to the non-diseased group to look for differences in risk factors.