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Top 20 Most Important CDM Interview Questions and Answers for Freshers

Coach
Written by Apr 01, 2026
Top 20 Most Important CDM Interview Questions and Answers for Freshers

1. What is Clinical Data Management (CDM)?

Answer:
CDM is the process of collecting, cleaning, and managing data generated during clinical trials to ensure it is accurate, reliable, and ready for analysis.


2. What is the role of a CDM professional?

Answer:
A CDM professional ensures data quality by designing CRFs, validating data, resolving queries, and preparing clean datasets for analysis.


3. What is a CRF (Case Report Form)?

Answer:
A CRF is a document used to collect data from clinical trial participants, either in paper or electronic format (eCRF).


4. What is eCRF?

Answer:
An eCRF is an electronic version of the Case Report Form used to capture clinical trial data digitally.


5. What is data validation?

Answer:
Data validation is the process of checking data for errors, inconsistencies, and missing values to ensure accuracy.


6. What is a query in CDM?

Answer:
A query is a question raised to resolve discrepancies or missing information in the clinical data.


7. What is data cleaning?

Answer:
Data cleaning involves identifying and correcting errors in the dataset to make it accurate and consistent.


8. What is a database lock?

Answer:
Database lock is the final step where the clinical database is closed after all data is verified and no further changes are allowed.


9. What is GCP (Good Clinical Practice)?

Answer:
GCP is an international ethical and scientific quality standard for designing, conducting, and reporting clinical trials.


10. What is MedDRA?

Answer:
MedDRA (Medical Dictionary for Regulatory Activities) is used to code medical terms like adverse events in clinical trials.


11. What is SAE (Serious Adverse Event)?

Answer:
An SAE is any adverse event that results in death, hospitalization, disability, or is life-threatening.


12. What is SDV (Source Data Verification)?

Answer:
SDV is the process of comparing data entered in the CRF with the original source documents to ensure accuracy.


13. What is a Data Management Plan (DMP)?

Answer:
A DMP outlines how clinical data will be handled, collected, validated, and stored during a study.


14. What is coding in CDM?

Answer:
Coding is the process of converting medical terms into standardized codes using dictionaries like MedDRA or WHO Drug.


15. What is discrepancy management?

Answer:
It involves identifying, tracking, and resolving data inconsistencies in clinical trial data.


16. What is audit trail?

Answer:
An audit trail records all changes made to the data, including who made the change and when.


17. What are edit checks?

Answer:
Edit checks are programmed rules in the database to detect errors or invalid data entries.


18. What is EDC (Electronic Data Capture)?

Answer:
EDC is a system used to collect and manage clinical trial data electronically.


19. What is a protocol in clinical trials?

Answer:
A protocol is a detailed plan that describes how a clinical trial will be conducted.


20. Why do you want to work in Clinical Data Management?

Answer:
I am interested in CDM because it combines healthcare and data management, and it plays a crucial role in ensuring patient safety and accurate clinical research outcomes.

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