CCDM Clinical Data Collection & Management 3 — Questions and Answers
Question 1: During database lock preparation, a discrepancy is found between the randomization code list and the study database. What should the data manager do first?
- Proceed with lock and address it in a post-lock correction
- Escalate to the unblinded pharmacovigilance team immediately
- Place the database on hold and investigate the discrepancy before locking (Correct answer)
- Correct the randomization code list to match the database
Correct answer: Place the database on hold and investigate the discrepancy before locking
The database must not be locked until all discrepancies between source randomization data and the database are resolved to ensure data integrity and regulatory compliance.
Question 2: Which type of data validation check would catch a subject age recorded as 250 years?
- Consistency check
- Cross-form check
- Range check (Correct answer)
- Completeness check
Correct answer: Range check
A range check flags values outside predefined minimum and maximum limits, such as an impossible age of 250 years.
Question 3: A sponsor decides to transition from paper CRFs to an EDC system mid-study. What is the most critical data management consideration?
- Selecting a new CRO to manage the transition
- Ensuring a validated migration plan that maintains data integrity and provides a clear audit trail (Correct answer)
- Deleting paper CRF data already entered to avoid duplication
- Issuing a protocol amendment to remove all paper CRF references
Correct answer: Ensuring a validated migration plan that maintains data integrity and provides a clear audit trail
A validated migration plan is essential to ensure that existing data is accurately transferred to the EDC system and that the audit trail remains intact.
Question 4: What is the primary function of a 'data monitoring committee' (DMC) in a clinical trial?
- To perform source data verification at investigative sites
- To independently review accumulating safety and efficacy data and recommend trial continuation, modification, or termination (Correct answer)
- To manage the day-to-day operation of the clinical database
- To write the statistical analysis plan before study start
Correct answer: To independently review accumulating safety and efficacy data and recommend trial continuation, modification, or termination
A DMC independently monitors unblinded interim data to protect participant safety and study integrity, with authority to recommend changes to the trial conduct.
Question 5: Under 21 CFR Part 11, which of the following is required for electronic signatures used in clinical research?
- A physical handwritten signature scanned and uploaded
- A unique combination of identification code and password with binding documentation linking the signature to the record (Correct answer)
- Approval from the FDA before first use in a study
- Annual renewal by the site's institutional review board
Correct answer: A unique combination of identification code and password with binding documentation linking the signature to the record
21 CFR Part 11 requires electronic signatures to be uniquely linked to the signer via credentials, and the organization must have documentation binding the electronic signature to the individual.
Question 6: A CRF page contains a field for 'date of last menstrual period' in a trial that includes both male and female subjects. What validation rule should be applied?
- The field should be mandatory for all subjects regardless of sex
- The field should be conditionally required only for female subjects (Correct answer)
- The field should be removed since it creates a data inconsistency
- The field should default to 'not applicable' for all subjects
Correct answer: The field should be conditionally required only for female subjects
Conditional logic in the CRF should make sex-specific fields required only when applicable, reducing unnecessary missing data queries for male subjects.
Question 7: What is the main advantage of using a centralized data management model versus a decentralized model?
- Sites retain full control over their own data with no sponsor oversight
- Standardized processes and tools reduce variability across sites and improve data consistency (Correct answer)
- Each site uses a different database system tailored to local requirements
- Data is collected only at study completion rather than in real time
Correct answer: Standardized processes and tools reduce variability across sites and improve data consistency
Centralized data management enforces uniform standards, edit checks, and processes across all sites, leading to more consistent and higher-quality data.
CCDM Clinical Data Collection & Management 3
During database lock preparation, a discrepancy is found between the randomization code list and the study database.
What should the data manager do first?