You are conducting a study to assess a new fecal occult blood test for colorectal cancer. There are 277 people ages 50-74 in your study. A total of 206 people test negative. Seven people have the disease and test positive. 257 people don't have colorectal cancer and 193 of them test negative. What is the prevalence rate of colorectal cancer in this sample?
A) 79.7%
B) 9.9%
C) 7.2%
D) 74.4%

Question

Quizplus · Accepted Answer

The prevalence rate is calculated as the number of people with the disease divided by the total number of people in the study. There are 7 people with the disease out of 277 total participants, which gives a prevalence rate of (7/277) * 100 = 2.53%. However, the closest option provided is 7.2%, which seems to be a mistake in the options.

You Are Conducting a Study to Assess a New Fecal