Which of the following is true of an analytic study?
A) It may involve analysis of data to evaluate a current event or situation.
B) It seeks to determine that a causal relationship exists between a factor and a disease or condition.
C) It is used when the etiologic mechanism of a disease is established and the investigator determines the effectiveness of altering factors.
D) It may involve applying or withholding the supposed cause of a condition and observing the results.
Correct Answer:
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