CCDM Data Validation 2 — Questions and Answers
Question 1: Which type of validation check ensures that a date field contains a value that is chronologically possible within the study context?
- Range check
- Consistency check
- Format check
- Logical check (Correct answer)
Correct answer: Logical check
A logical check verifies that dates are chronologically sensible, such as ensuring that the informed consent date precedes the first visit date.
Question 2: In clinical data management, what is a 'discrepancy' most accurately defined as?
- A missing data point in the CRF
- A data value that does not meet predefined validation criteria (Correct answer)
- An error in the protocol design
- A deviation from standard operating procedures
Correct answer: A data value that does not meet predefined validation criteria
A discrepancy is a data value that fails to meet predefined validation criteria, triggering a query to the site for clarification or correction.
Question 3: What is the primary purpose of a User Acceptance Testing (UAT) phase in clinical database validation?
- To train data entry staff on the EDC system
- To confirm the database meets sponsor and regulatory requirements before go-live (Correct answer)
- To perform statistical analysis of the study data
- To generate the final data listings for submission
Correct answer: To confirm the database meets sponsor and regulatory requirements before go-live
UAT confirms that the clinical database system functions as specified and meets all sponsor and regulatory requirements before it is released for live data entry.
Question 4: Which edit check type would flag a record where a subject is noted as pregnant but the recorded gender is male?
- Range check
- Format check
- Cross-field consistency check (Correct answer)
- Required field check
Correct answer: Cross-field consistency check
A cross-field consistency check compares values across multiple fields to detect biologically or logically impossible combinations.
Question 5: According to ICH E6(R2), what should be the basis for the scope and nature of data validation procedures?
- The number of subjects enrolled in the trial
- A risk-based approach focusing on critical data and processes (Correct answer)
- The preferences of the principal investigator
- The volume of data collected per visit
Correct answer: A risk-based approach focusing on critical data and processes
ICH E6(R2) mandates a risk-based approach to data management, meaning validation efforts should be proportionate to the risk and importance of the data.
Question 6: What does 'data lock' signify in the context of clinical trial data validation?
- The encryption of the clinical database to prevent unauthorized access
- The formal closure of the database after all validation activities are complete (Correct answer)
- The restriction of query issuance to the data management team only
- The archiving of paper CRFs to a secure location
Correct answer: The formal closure of the database after all validation activities are complete
Database lock is the formal process of closing the clinical database to further changes after all data cleaning and validation activities have been completed.
Question 7: A validation check that ensures a subject's age at screening is between 18 and 75 years is an example of which type?
- Relational check
- Range check (Correct answer)
- Derivation check
- Uniqueness check
Correct answer: Range check
A range check verifies that a numeric value falls within a predefined acceptable minimum and maximum boundary, such as an age eligibility window.
CCDM Data Validation 2
Which type of validation check ensures that a date field contains a value that is chronologically possible within the study context?