Data collection in epidemiology can be achieved through various methods, including:
Surveys: Questionnaires and interviews used to collect data from a sample of a population. Surveillance Systems: Continuous, systematic collection, analysis, and interpretation of health-related data needed for planning, implementation, and evaluation of public health practice. Vital Statistics: Data on births, deaths, marriages, and divorces collected by governmental bodies. Medical Records: Information from patient records, including hospital admissions, discharges, and outpatient visits.