Edit Reference: Reference:USA NIH - Glossary 27-May-2025 Observational study

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Comment:	Definition of observational study
Content:	Observational study A type of clinical study in which participants are identified as belonging to study groups and are assessed for biomedical or health outcomes. Participants may receive diagnostic, therapeutic, or other types of interventions, but the investigator does not assign participants to a specific interventions/treatment. A patient registry is a type of observational study.

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