Estimating the Population Size of Men Who Have Sex with Men in the United States to Obtain HIV and Syphilis Rates§

Table 5: Estimated Number, Rate Per 100,000 Persons, and Rate Ratios for MSM Living with a Diagnosis of HIV Infection, year-End 2007, 37 States with Confidential Name-Based HIV Infection Reporting, for MSM, Other Men, Women, and MSM by Race/Ethnicity and Age

	Estimated Number of MSM Living with HIV	Estimate rate per 100,000 Population (95% CI)		Rate Ratio (95% CI)^*
MSM and Other Men
Other Men	152,468	187	(186 – 188)	Ref
MSM	265,330	7,929	(7,116 – 8,951)	42 (38 – 48)
MSM and Women
Women^#	153,814	173		Ref
MSM	265,330	7,929	(7,116 – 8,951)	46 (41 – 52)
MSM Race/Ethnicity
White	128,290	5,523	(4,896 – 6,155)	Ref
Hispanic	43,908	10,601	(9,396 – 11,812)	1.9
Black/ African American	87,446	21,018	(18,629 – 23,420)	3.8
MSM Age at the End of 2007 (in years):
13–24	10,836	1,538	(1,363 – 1,713)	Ref
25–34	41,376	7,412	(6,570 – 8,260)	4.8
35–44	96,284	16,514	(14,637 – 18,401)	10.7
45–54	82,532	14,071	(12,472 – 15,679)	9.2
55+	34,302	3,925	(3,479 – 4,374)	2.6

^* There are no confidence intervals for rate ratios for MSM race/ethnicity or age because the proportion of men in each subgroup does not change as the proportion of MSM in the population changes.

^# There are no confidence intervals for women because the rate calculation uses U.S. census count, not an estimated number as with MSM and other men.