Question

Questions 8.. Build a 2 x 2 table and calculate an odds ratio for the following three dishes: Show all of your work. (3 points) Oyster, passion fruit, and lavender: of 228 cases, 200 ate the oyster, passion fruit, and lavender dish. 28 cases had not tried it. Of 71 controls, 21 people tasted the dish but 50 had not eaten it. • Salmon poached in licorice gel: 150 cases reported eating this dish while 78 cases did not try it. 38 controls reported eating this dish whereas 33 did not taste it. Parsnip cereal: 100 cases tasted the dish, 128 did not. 30 controls ate the dish, whereas 41 did not try it. 9. Based on your understanding of odds ratios, which food item would you suspect as the source of the outbreak? How would you confirm this? Be specific. (2 points)

Answer 1

• Oyster, passion fount and lavender Herce Table is cases Exposed Cate) controls 21 200 Not exposed 28 50 Not ate) LC Now odds Rasio is = (%)/(0/0) 200x50 28x21 - 17.0068 salmon poached in licorice get : cable is Controls Exposed 150 38 a Not exposed Crot ate) 78 с. 33 Now odds Rano いて 150 433 = 78 788 = 1.6700404

• Parosnip Cereal : Hear the table is Cases Controls 100 30 Exposed cate) Not exposed (Not ate) 128 4 1 Now Odds Rasso be 100NYI 128 430 - 1.067708 9 Here odds Rano oyster, passion fruit and tamender is 17.00 68 is gepeatest of these three, Now , odds raro is greater that S indicates the condition is more likely in this case iy source so, oyster, passion fonit ana outbreak. lavender of the