Epidemiology & Prevention USMLE Step 1 Practice Questions
53 board-style USMLE Step 1 questions in Biostatistics & Behavioral Science. Each question shows the correct answer; create a free account for the full explanation and adaptive practice.
- USMLE Step 1 · easy49. A new antiviral medication is introduced for a chronic infection in a city of 1 million people. The drug does not prevent new infections, but it markedly shortens the duration o…
- USMLE Step 1 · easy50. A county health department follows 20,000 residents for 1 year after a contaminated water exposure. At baseline, 200 residents already have documented immunity to hepatitis A fr…
- USMLE Step 1 · hard51. A 7 year old boy is diagnosed with acute lymphoblastic leukemia, and investigators design a case control study to evaluate household benzene exposure. They match each case to co…
- USMLE Step 1 · medium52. A 55 year old woman with metastatic breast cancer is offered a new targeted therapy. Compared with standard treatment, the new regimen costs an additional $40,000 and yields an…
- USMLE Step 1 · medium53. A 23 year old woman develops paraplegia after a spinal cord injury and survives for decades with major functional limitation. Health economists want a measure that combines year…