22. This study is an example of a retrospective cohort study.
A. True
B. False
23. The most appropriate measure of association for these data is the:
A. Attributable risk percent
B. Chi-square
C. Odds ratio
D. Risk ratio
24. Which food is the most likely culprit?
A. Punch
B. Wedding cake
C. Sushi
D. Can’t determine from the data presented.
E. Must be more than one food