Cohort study design — MRCPCH TAS MCQ

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ModerateStatistics and evidence-based medicineCohort study designMRCPCH TAS

Researchers follow children born before 28 weeks and term controls for 10 years to compare later blood pressure. Exposure status is known at recruitment and outcomes occur later. What study design is most likely?

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Correct answer: B — Cohort study

A cohort study follows exposed and unexposed groups over time to compare outcome incidence. A case-control study would start with children who do and do not have high blood pressure, then look back for prematurity. The pearl is that cohort studies can estimate incidence and relative risk.

Reference: RCPCH TAS specimen paper; CEBM study designs; The Science of Paediatrics MRCPCH Mastercourse