Sample attrition would be reflected by the:
A) average death rate of the population under study.
B) inability to access identified members of a population.
C) number of patients who die while participating in a study.
D) number of patients who drop out of a study.

Question

Quizplus · Accepted Answer

Sample attrition or mortality is the withdrawal or loss of subjects from a study.
Sample attrition or mortality is the withdrawal or loss of subjects from a study.
Sample attrition occurs after the sample has been created. If members of the population cannot be accessed, they would not be subjects to begin with. Sample mortality is the withdrawal or loss of subjects from a study.
Although death may decrease sample size in some studies, that is not the meaning of mortality in the case of sample mortality. Sample mortality is the withdrawal or loss of subjects from a study.

Sample Attrition Would Be Reflected by The