Data Collection & CRF Management Flashcards
7 cards from real Certified Lactation Specialist practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Data Collection & CRF Management flashcards as text
A lactation researcher wants to measure breastfeeding exclusivity at 6 weeks postpartum. Which data collection method provides the most valid result?
Answer: Prospective 7-day feeding diary completed by the mother
A prospective 7-day diary captures real-time feeding behaviors, minimizing recall bias compared to retrospective methods.
Which variable type would 'parity' (number of prior births) be classified as in a CRF?
Answer: Discrete numerical
Parity is a discrete numerical variable because it takes only whole-number values and has a true zero.
A site coordinator realizes a CRF page was completed for the wrong participant. What is the appropriate corrective action?
Answer: Note the error on the page, void it, complete a new page for the correct participant, and notify the data manager
The incorrect page should be voided with an explanation, a new correct page completed, and the data manager notified per standard SOPs.
In lactation research, which approach best controls for interviewer bias during data collection?
Answer: Using standardized scripts and blinded interviewers when possible
Standardized scripts and, when feasible, blinding interviewers to participant group assignment minimize the influence of interviewer bias.
What does 'data lock' signify in the lifecycle of a clinical study CRF?
Answer: All data has been verified, queries resolved, and the database is frozen for analysis
Data lock is the formal point at which the database is closed to further changes, signaling readiness for statistical analysis.
A lactation study collects milk output via test weights. Which instrument characteristic is most critical for data accuracy?
Answer: The scale's calibration and precision in grams
Scale calibration and precision in grams are essential for valid test weight measurements, as small errors can significantly affect data quality.
Which of the following is a key purpose of a data dictionary in a lactation CRF study?
Answer: Defining each variable, its allowable values, units, and coding conventions
A data dictionary standardizes variable definitions and coding, ensuring consistent data entry across all sites and personnel.
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Sources & references
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- hhs.iowa.gov — Eligibility · verified Oct 2026
- lactationeducation.com — Exam format, passing score, registration deadline, renewal, score validity, test dates, exam information · verified Oct 2026
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