A Researcher Is Explaining the Concept of Risk in Clinical

A researcher is explaining the concept of risk in clinical trials.Which statements are correct regarding risk of an event? (Select all that apply.)

A) Identification of a risk of an event does not imply causality between the factor and the studied condition.
B) Event rate is directly tied to number of patients in the control group.
C) Relative risk is the risk of the event after the experimental treatment as a ratio of original risk.
D) The higher the relative risk, the more likely the event is causal.

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