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A case-control study is characterized by all of the following except: Cases with the disease are...

  1. A case-control study is characterized by all of the following except:
    1. Cases with the disease are compared to controls without the disease
    2. Relative risk of disease can be calculated
    3. The assessment of past exposure may be biased
    4. Finding appropriate controls can be challenging
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Answer #1

A case-control study is characterized by all of the following except the relative risk of disease can be calculated.

Relative risk means the ratio of incidence in the exposed group and incidence in the nonexposed group so, you required incidence rate to calculate relative risk but in the case-control study you are going backward. you are starting from a diseased person so, you can not calculate the incidence rate in a case-control study. If there is no incidence rate then there is no relative risk.

Answer - C.Relative risk of disease can be calculated

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