Table 6: Number, Rate, and Rate Ratio for All MSM, Other Men, and Women and for MSM by Race/Ethnicity and Age for Primary and Secondary (P&S) Syphilis Diagnoses, 2008, 39 States*

Number of P&S Syphillis Diagnoses Estimate Rate Per 100,000 Population (95% CI ) Rate Ratio (95% CI)*
MSM and Other Men
 Other Men† 2,294 2.2      (2.2 – 2.2) ref
 MSM† 6,606 154      (136 – 172) 71    (63 – 79)
MSM and Women
 Women# 1,821 1.6 ref
 MSM† 6,606 154      (136 – 172) 96    (85 – 109)
MSM Race/Ethnicity
 White 2,699 78       (69 – 87) ref
 Hispanic 1,234 141      (125 – 158) 1.8
 Black/African American 2,248 353      (313 – 393) 4.5
MSM Age:
 13–24 1,524 166      (147 – 185) Ref
 25–34 2,001 277      (245 – 308) 1.7
 35–44 1,920 258      (229 – 287) 1.6
 45–54 941 123      (109 – 137) 0.7
 55+ 219 19       (17 – 21) 0.1

* 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.
† Sex of sex partner data were available for 8,900 (86.5%) of 10,289 men in these 39 states during 2008.