8. Before reporting the results of this survival analysis, the investigators com

Question

8. Before reporting the results of this survival analysis, the investigators compared the baseline characteristics of the 42 persons who withdrew from the study before its end with those of

the participants who had complete follow-up. This was done for which of the following reasons:

a. To test whether randomization was successful

b. To check for changes in prognosis over time

c. To check whether those who remained in the study represent the total study population

d. To determine whether the outcome of those who remained in the study is the same as the outcome of the underlying population

e. To check for confounders in the exposed and nonexposed groups

Explanation / Answer

The correct answer is C. that is, to check whether those who remained in the study represent the total study population.

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