CCDM Data Collection Methods 4 — Questions and Answers
Question 1: What is the role of a Data Collection Charter (DCC) in a clinical trial?
- It defines the statistical analysis plan for primary endpoints
- It documents the agreed-upon data collection standards, responsibilities, and timelines (Correct answer)
- It specifies the randomization algorithm and stratification factors
- It outlines the regulatory submission package
Correct answer: It documents the agreed-upon data collection standards, responsibilities, and timelines
A DCC serves as a formal agreement documenting how data will be collected, by whom, and within what timeframes across the trial.
Question 2: Which scenario represents a protocol deviation in data collection?
- A query is raised for a missing field
- A blood sample is collected 3 hours outside the protocol-specified window (Correct answer)
- A patient signs the informed consent form before screening
- An adverse event is reported within 24 hours
Correct answer: A blood sample is collected 3 hours outside the protocol-specified window
Collecting a blood sample outside the protocol-defined time window constitutes a protocol deviation that must be documented.
Question 3: In clinical data management, what is 'dual data entry' designed to detect?
- Missing patient consent
- Data entry errors by identifying discrepancies between two independent entries (Correct answer)
- Protocol amendments
- Adverse event severity grading errors
Correct answer: Data entry errors by identifying discrepancies between two independent entries
Dual data entry requires two operators to independently enter the same data, with any discrepancies flagged for resolution to reduce transcription errors.
Question 4: Which CDISC standard is specifically designed to guide the collection of clinical data at the point of data capture?
- SDTM (Study Data Tabulation Model)
- CDASH (Clinical Data Acquisition Standards Harmonization) (Correct answer)
- ADaM (Analysis Data Model)
- Define-XML
Correct answer: CDASH (Clinical Data Acquisition Standards Harmonization)
CDASH provides standardized data collection fields and guidance for CRF design to facilitate downstream SDTM mapping.
Question 5: A site coordinator is unsure whether to record a medical history event that occurred before the trial started. What data collection principle should guide this decision?
- Only events occurring after screening should be recorded
- The protocol's definition of medical history and its time boundaries should determine what is captured (Correct answer)
- All medical events in the patient's lifetime should be captured
- The investigator's personal judgment takes precedence over the protocol
Correct answer: The protocol's definition of medical history and its time boundaries should determine what is captured
The protocol defines the scope and timeframe for medical history collection, and all site decisions must align with those definitions.
Question 6: What is the primary advantage of using eDiaries over paper diaries for patient-reported data collection?
- Lower device cost per patient
- Real-time data availability and reduced risk of back-filling (Correct answer)
- Elimination of the need for informed consent
- Automated adverse event coding
Correct answer: Real-time data availability and reduced risk of back-filling
eDiaries timestamp entries and transmit data in real time, reducing the risk of patients completing diary entries retrospectively (back-filling).
Question 7: When designing a CRF for a Phase III oncology trial, which data field is MOST critical to align with the primary efficacy endpoint?
- Patient demographic information
- Tumor response assessment data per protocol-specified criteria (e.g., RECIST) (Correct answer)
- Concomitant medication listing
- Investigator site identification number
Correct answer: Tumor response assessment data per protocol-specified criteria (e.g., RECIST)
The primary endpoint drives CRF design; for oncology trials using RECIST, tumor response fields must exactly capture required assessment data.
CCDM Data Collection Methods 4
What is the role of a Data Collection Charter (DCC) in a clinical trial?