1. Suppose a new research study at a major university near you is investigating
ID: 3181220 • Letter: 1
Question
1. Suppose a new research study at a major university near you is investigating an outbreak of food borne illness from the cafeteria. Of 1,400 students that used the cafeteria that day, 860 reported severe diarrhea and vomiting. That same day, the cafeteria reps provided camera evidence that 3/4 of the students consumed food from the seafood section, and they suspect that station to be the culprit. After interviewing the 860 students that reported symptoms matching a potential outbreak, 798 of the students reported eating at the seafood station. What is the relative risk of food borne illness for those that ate from the seafood section versus those that did not?
Explanation / Answer
No. of students consuming food from seafood section = 3/4* 1400 = 1050
THe following 2 * 2 matrix is formed
The matrix is formed by filling in missing value and doing row and sum totals
Relative risk of food borne illness = Risk(Sea-food)/ RIsk( No-seafood) = (798/1050) / 62/350 = 798/186 = 4.29 times
Seafood No sea food Sum Diarrhea 798 62 860 No Diarrhea 252 288 540 Sum 1050 350 1400Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.