Which of the following is not a requirement for consideration before continuing

Question

Which of the following is not a requirement for consideration before continuing with the calculation of a sample size in an observational study observing the difference in incidence of disease X based on exposure? 1. The correlation coefficient between the two groups being compared. 2. Projected drop-out rate to inflate the sample size estimate based on the projected loss to follow-up in a study. 3. A predetermined power for the study to detect a difference when one actually exists. 4. The informed estimation of the incidence in both groups being compared.

Explanation / Answer

Here the correct choice is:

Option(1) : The correlation coefficient between the two groups being compared. (Ans).

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