A Data Manager (DM) is the clinical research professional responsible for overseeing collection, cleaning, validation, and control of clinical trial data.
Data managers manage query workflows, data reconciliation, edit checks, and database lock processes to ensure analysis-ready datasets. Their work supports traceability and documentation of data handling decisions across the study lifecycle. Strong data management reduces risk of inconsistent datasets and supports reliable statistical outputs. Regulators expect data processes to be controlled, auditable, and aligned with data integrity standards.