A case-control study was conducted to assess the relationship between multiple sex partners and Kaposis sarcoma, a cancer transmitted by human herpesvirus 8.Cases were men ages24 to 40 who had been diagnosed with Kaposis sarcoma during the six months prior to study recruitment.A group of men who had never been diagnosed with Kaposis sarcomawasselected asthecontrol.(25points)

		Cases	Controls	Total
Multiple sex partners	Yes	201	109	310
	No	116	344	460
	Total	317	453	770

What are the odds ofcasesamongthe exposed (multiple sex partners:yes)?

What are the odds ofcasesamongthe non-exposed (multiple sex partners:no)?

Calculate and interpret the disease odds ratio for these data.

Calculate and interpret the 95% confidence interval for the above odds ratios.

Based on these data, would 3.75 be a reasonable estimate of the odds ratio of Kaposis sarcoma comparing men who have multiple sex partners with men who do not? Why or why not?