Biostatistics & Research · single question
In which type of study are surveys most commonly used as the primary data collection method?
Show answer and explanation
Correct answer: B. Cross-sectional study
Cross-sectional studies commonly use surveys to measure both disease and exposure status simultaneously at one point in time.
- A. ❌ Cohort studies follow participants over time with repeated measurements.
- B. ✅ CORRECT – Cross-sectional studies use surveys to measure prevalence and associations at one time point.
- C. ❌ Case-control uses records/interviews for past exposures.
- D. ❌ RCTs use experimental interventions and outcome measurements.
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