Biostatistics & Study Design USMLE Step 1 Practice Question
A 63-year-old man with acute ST-elevation myocardial infarction (BP 128/82, HR 102, RR 18, SpO2 98%) presents with elevated troponin I (2.8 ng/mL) and anterior wall changes on ECG. He has type 2 diabetes mellitus managed with metformin but denies prior cardiac events. Investigators enrolling him in a novel antiplatelet drug trial separate participants into diabetic and nondiabetic groups before randomizing within each stratum. Which study design best describes this method?
Answer choices
- AAllocation concealment
- BCluster randomization
- CStratified randomizationCorrect answer
- DMatching
- EBlock randomization
- FPropensity score matching
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