If the incidence rate is 0.25,then on average how many potential respondents must be approached in order to obtain one qualified respondent?
A) .25
B) .75
C) 1.25
D) 3
E) 4

Question

Quizplus · Accepted Answer

Incidence rate is the proportion of individuals in the target population who are eligible and willing to participate in the study. If the incidence rate is 0.25, then 1 out of 4 individuals will be eligible and willing to participate. This means that on average, we will need to approach 4 potential respondents in order to obtain one qualified respondent. Therefore, the answer is E (4).

If the Incidence Rate Is 0