SCDM Data Collection and EDC Systems 2 — Questions and Answers
Question 1: What is a 'query' in the context of EDC data management?
- A request for clarification or correction of a data discrepancy identified in the EDC system (Correct answer)
- A SQL command used to extract data from the clinical database
- A regulatory agency's request for additional study information
- A site's request to access an additional subject's records
Correct answer: A request for clarification or correction of a data discrepancy identified in the EDC system
In EDC data management, a query is a formal request sent to site staff asking them to clarify, confirm, or correct a data discrepancy identified through edit checks or manual review.
Question 2: What is the purpose of 'central data monitoring' in modern clinical trials?
- To use statistical and analytical techniques to remotely evaluate data quality and site performance (Correct answer)
- To conduct on-site monitoring visits at every participating center
- To manage the EDC system configuration centrally
- To review SAEs reported by all sites in a central repository
Correct answer: To use statistical and analytical techniques to remotely evaluate data quality and site performance
Central data monitoring uses statistical tools to remotely evaluate data patterns, site performance, and potential issues, allowing risk-based targeting of on-site monitoring resources.
Question 3: What is an 'unscheduled visit' in EDC data collection?
- A visit that occurs outside the protocol-defined schedule, typically for safety reasons (Correct answer)
- A visit where the subject arrives before the protocol window
- A visit conducted by a monitor rather than a clinical staff member
- A visit recorded only in source documents and not in the EDC
Correct answer: A visit that occurs outside the protocol-defined schedule, typically for safety reasons
An unscheduled visit is one not included in the protocol visit schedule, typically occurring for safety reasons such as adverse events, and must be documented in the EDC system.
Question 4: What is the significance of 'data entry latency' in clinical EDC systems?
- The time between a clinical event occurring and when data is entered into the EDC, which affects data quality and timeliness (Correct answer)
- The system response time when a user submits a CRF page
- The delay between database lock and statistical analysis
- The time required to transmit data from the site to the central server
Correct answer: The time between a clinical event occurring and when data is entered into the EDC, which affects data quality and timeliness
Data entry latency measures how promptly data is entered after an event occurs; high latency risks data inaccuracy, query pile-up, and delayed issue detection.
Question 5: In EDC design, what is a 'conditional field' (or dynamic field)?
- A field that only becomes visible or required based on a response to a prior question (Correct answer)
- A field that has been conditionally approved by the sponsor
- A field that is optional for some sites and mandatory for others
- A field that changes its label based on subject age
Correct answer: A field that only becomes visible or required based on a response to a prior question
Conditional fields appear or become required based on logic tied to earlier responses, reducing irrelevant data entry and guiding site staff through form completion contextually.
Question 6: What is 'discrepancy management' in clinical data management?
- The systematic process of identifying, querying, resolving, and tracking data inconsistencies in the database (Correct answer)
- The process of reconciling subject counts between sites and the central database
- The review of protocol deviations detected during monitoring visits
- The management of conflicting safety signals identified by the DSMB
Correct answer: The systematic process of identifying, querying, resolving, and tracking data inconsistencies in the database
Discrepancy management encompasses all activities for detecting data issues through edit checks and manual review, generating queries, tracking resolutions, and verifying corrections.
SCDM Data Collection and EDC Systems 2
What is a 'query' in the context of EDC data management?