Q:

In a study of 500 cases of a disease and 500 controls, the suspected etiological factor is found in 400 of the cases and 100 of the controls. The absolute risk (incidence of disease in persons with the factor is:

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In a study of 500 cases of a disease and 500 controls, the suspected etiological factor is found in 400 of the cases and 100 of the controls. The absolute risk (incidence of disease in persons with the factor is:


  1. 80%
  2. 40%
  3. 16%
  4. 20%
  5. Cannot be computed from data given

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e) Cannot be computed from data given 

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