Question
Social And Preventive Medicine Question on Epidemiology
Many children from a particular community coming to a hospital were detected to have acute lymphoblastic leukemia (ALL). It was assumed that it is due to the presence of cytotoxic waste in the water of that community. If a case-control study has to be done to find whether the chemical and ALL are associated, what will be taken as the control?
A
Children from the area exposed, but unaffected with the disease
B
Children from the area not exposed and affected with the disease
C
Children coming to your OPD, who do not have the disease
D
All children with ALL irrespective of exposure status
Answer
All children with ALL irrespective of exposure status
Explanation
Solution
The correct option is (D) : All children with ALL irrespective of exposure status