There are 20 patients in your hospital ward. After an evening meal of BBQ or salad, seven of your patients are quite sick. You suspect something may have been wrong with the BBQ.

See the table below to demonstrate the numbers. Using the table above, what are the odds ratio for the relationship between eating the BBQ and not eating the BBQ?

	Patients who are sick	Patients who are not sick	Total
Ate the BBQ for dinner (exposed)	5 a	3 b	8 a+b
Did not eat the BBQ for dinner (unexposed)	2 c	10 d	12 c+d
Total	7 a+c	13 b+d	20 a+c+b+d