data collection

Where Do Epidemiologists Collect Data From?

Epidemiologists gather data from various sources:
1. Surveillance Systems: Continuous collection, analysis, and interpretation of health-related data. Examples include the CDC's National Notifiable Diseases Surveillance System (NNDSS).
2. Surveys: Structured questionnaires to collect data on health behaviors, conditions, and risk factors. Examples include the National Health and Nutrition Examination Survey (NHANES).
3. Health Records: Electronic Health Records (EHRs) and medical charts.
4. Registries: Databases that record all cases of a particular disease within a certain population. Examples include cancer registries.
5. Clinical Trials and Cohort Studies: Research studies that collect data from participants over time.

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