A worthwhile, conservative strategy for minimizing the possibility of invalid causal conclusions due to differential attrition is ______.
A) ensuring at the outset of the experiment that subject assignment is truly random
B) recruiting only subjects with stable residential histories and ongoing institutional ties
C) combining matching with randomization
D) basing the outcome analysis on comparing all subjects initially assigned to each condition

Question

Quizplus · Accepted Answer

Basing the outcome analysis on comparing all subjects initially assigned to each condition (intention-to-treat analysis) helps minimize bias due to differential attrition by including all participants regardless of whether they completed the study.

A Worthwhile, Conservative Strategy for Minimizing the Possibility of Invalid