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Repeated USMLE Questions Step 1- 279

Researchers perform a study on foot ulcers caused by diabetes. They collect patients of foot ulcers and divided them into a group of patients with diabetes and another group of non-diabetic patients. The researchers compute the rate of foot ulcers in diabetic patients versus non-diabetic patients.

This study is considered:

A-Case-control study

B-Cohort study

C-Longitudinal study

D-Cross-sectional study

E-Double-blind study



Answer

This study is case-control study as it is retrospective and compared an odds ratio. It is not prospective because the patients already had foot ulcers.

The correct answer is A


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