There are several methods for collecting data in epidemiology, each suited for different study designs and objectives:
1. Surveys and Questionnaires: Often used to collect information on health behaviors, exposures, and outcomes from a large number of people. 2. Surveillance Systems: Continuous data collection systems that monitor the incidence and prevalence of diseases. 3. Medical Records: Extraction of data from patient records to study disease patterns and outcomes. 4. Registries: Databases that systematically collect information about specific diseases or conditions. 5. Laboratory Testing: Biological samples are analyzed to identify pathogens, measure biomarkers, or assess genetic factors.
