TABLE 2—

Coefficients for Sexual Minority Status Differences in Risk Behaviors for Sexually Transmitted Infections: Youth Risk Behavior Surveys, United States, 2005 and 2007

Variable	Age at First Sex, IRR (95% CI)	No. of Sex Partners, IRR (95% CI)	Concurrent Partners, OR (95% CI)	No Condom Used During Last Sex, OR (95% CI)	Drugs or Alcohol During Sex, OR (95% CI)
Sexual orientation status
Heterosexual YMSW (Ref)	1.00	1.00	1.00	1.00	1.00
Heterosexual YMSM/W	0.97 (0.95, 1.00)	1.03 (0.89, 1.20)	0.66 (0.41, 1.08)	2.05** (1.28, 3.27)	1.20 (0.73, 1.97)
Bisexual	0.93*** (0.91, 0.96)	1.41*** (1.19, 1.66)	2.56*** (1.43, 4.57)	3.38*** (1.81, 6.29)	1.13 (0.68, 1.91)
Gay	0.98 (0.95, 1.01)	1.18 (0.95, 1.46)	1.67 (0.98, 2.85)	3.57*** (2.06, 6.20)	0.99 (0.60, 1.61)
Race/ethnicity
Non-Hispanic White (Ref)	1.00	1.00	1.00	1.00	1.00
Non-Hispanic Black	0.92*** (0.91, 093)	1.82*** (1.70, 1.96)	2.16*** (1.70, 2.76)	0.71*** (0.59, 0.86)	0.47*** (0.38, 0.59)
Hispanic	0.95*** (0.94, 0.96)	1.52*** (1.41, 1.65)	1.77*** (1.39, 2.26)	1.08 (0.87, 1.34)	0.65*** (0.53, 0.80)
Asian	0.98 (0.96, 1.01)	0.74** (0.60, 0.90)	0.72 (0.45, 1.14)	1.27 (0.82, 1.95)	0.61* (0.38, 0.99)
Pacific Islander/Native American	0.94*** (0.91, 0.96)	1.54*** (1.36, 1.75)	2.47*** (1.63, 3.67)	0.78 (0.43, 1.16)	0.74 (0.51, 1.06)
Age	1.04*** (1.04, 1.04)	1.08*** (1.06, 1.11)	1.08* (1.00, 1.17)	1.13*** (1.05, 1.22)	1.05 (0.98, 1.13)

Note. CI = confidence interval; IRR = incident rate ratio; OR = odds ratio; YMSM/W = young men who have sex with men or with men and women; YMSW = young men who have sex with women. All models control for race/ethnicity and age. Estimates for number of sex partners and age at first sex are drawn from Poisson regression; all other analyses use logistic regression. Unweighted sample sizes were as follows: age at first sex, n = 10 454; number of sex partners, n = 11 706; concurrent partners, n = 13 150; no condom used during last sex, n = 10 073; drugs or alcohol during sex, n = 11 790.

*P ≤ .05; **P ≤ .01; ***P ≤ .001.