MCAT Question of the Day
    •

    Q:

    		 Which of the following is the best example of a case-control observational study?
    		 

    A

    		 Children from rich and poor backgrounds are tracked over time for key health indicators.

    B

    		 A large manufacturing workplace is studied for a correlation between smoking and productivity.

    C

    		 A drug is tested for effectiveness by administering it to one group of patients with a disease while another group of patients does not receive the drug.

    D

    		 Patients of a rare cancer are surveyed for common past exposures.



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