Data collection methods vary depending on the type of database:
- Surveillance Databases: Data are often collected through mandatory reporting by healthcare providers and laboratories. - Cohort Databases: Data are collected through regular follow-ups with participants, including surveys, physical exams, and laboratory tests. - Registry Databases: Data are gathered from multiple sources, including hospitals, clinics, and pathology labs. - Administrative Databases: Data are extracted from electronic health records, insurance claims, and other administrative systems. - Survey Databases: Data are collected through structured questionnaires and interviews with participants.