Which studies have the greatest difficulty with the loss of subjects?
A) Longitudinal
B) Cross-sectional
C) Clinical
D) Case history

Question

Quizplus · Accepted Answer

Longitudinal studies track individuals over a prolonged period. Therefore, they are susceptible to attrition, which could introduce bias and impact the internal validity of the studies. In contrast, cross-sectional studies analyze a single point in time, and their results are not impacted by the loss of subjects. Clinical and case history studies, in general, have a smaller sample size, and the loss of a few subjects may not have a significant effect on the overall results.

Which Studies Have the Greatest Difficulty with the Loss of Subjects