When a cohort study was started on a college campus, it was determined that at the outset 200 of 1200 students in the cohort already had the illness under study. Over the next year, 150 students contracted the illness for the first time. What was the incidence rate?
A) 150/1000
B) 350/1000 C) 150/1200
D) 200/1200
E) 350/1200
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2 comments:
C
@ Anonymous
The correct answer can be found once you click on the Answer link at the bottom of the choices. I have included a small explanation as well.
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