MCAT Question of the Day
    •

    Q:

    		 A study finds that children who are exposed to multiple CT scans are 3 times more likely to develop brain cancer or leukemia. Based on this finding alone, is the conclusion that CT scans cause brain cancer valid?
    		 

    A

    		 Yes, because correlation necessitates causation.

    B

    		 Yes, because a 3-fold increase in the risk is statistically significant.

    C

    		 No, because the children may be receiving multiple CT scans for conditions that are responsible for the increase in the likelihood of cancer.

    D

    		 No, because a 3-fold increase in the risk may not be statistically significant.



    Quantitative Skills |
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