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a case study differs from a nested cass study by : a. not using controls b....

a case study differs from a nested cass study by :

a. not using controls
b. not using matching
c. inability to study occupational exposures
d. none of these is correct
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Answer #1

The case study is differing from the nested case study in methods of choosing of controls. Answer is D. none of these is correct. Nested case study and cases study is similar in matching, using of controls, can be used in occupational exposures. Nested case study can use controls and compares the variables and it can be used to study occupational exposures. The case study is differing from only methods from using controls. It uses controls to study and compares the variables and can be used to study occupational exposures

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