A researcher attempted to recruit all 150 of the patients seen in the emergency department in a three-month period for diverticulitis, but only 120 consented to participate. What is the refusal rate?
a. 100%
b. 80%
c. 20%
d. 0%
ANS: C
A refusal rate is the number and percentage of subjects who declined to participate in the study. High refusal rates to participate in a study have been linked to individuals with serious physical and emotional illnesses, low socioeconomic status, and weak social networks. The higher the refusal rate, the less the sample is representative of the target population. The refusal rate is calculated by dividing the number of potential subjects refusing to participate by the number of potential subjects meeting sampling criteria and multiplying the results by 100%.
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