A researcher begins a study with 250 subjects,and 50 subjects drop out before the study is concluded.The researcher will declare 20% as the sample
A) acceptance rate.
B) attrition rate.
C) refusal rate.
D) retention rate.

Question

Quizplus · Accepted Answer

The sample attrition rate is the percentage of subjects who withdraw from a study after the study has begun.The acceptance rate is the percentage of subjects who meet eligibility requirements who consent to participate.The refusal rate is the percentage of subjects who meet eligibility requirements who refuse to participate.The retention rate is the percentage of subjects who remain in the study after the study has begun.

A Researcher Begins a Study with 250 Subjects,and 50 Subjects