Less than $2000/month More than $2000/month 48 16 36 14 Age <30 30< Age <40 40< Age <55 Age >55 Age Category Fig. 1 Characteristics of methamphetamine use. a Characteristics of reported methamphetamine use by gender/sexual orientation sub- groups (use in 12 months v2 = 17.52, P \ 0.01, use in 4 weeks v2 = 12.43, P = 0.05). b Reported methamphetamine use is common throughout all race/ethnicity groups; across all participants except TG, reported methamphetamine use is more common among whites (all P \ 0.05) but there is no statistically signiﬁcant difference between race/ethnicity groups within in any gender/orientation group. c Reported methamphetamine use by age category and income level, 2008. Reported methamphetamine use is less common among older participants (v2 = 18.64, P \ 0.001), though this difference is not signiﬁcant among participants earning more than $2,000/month. Reported methamphetamine use is more common among participants who earned less than $2,000/month (v2 = 27.16, P \ 0.001), though this difference is not signiﬁcant among participants younger than 30 years old or older than 55 years old 35 23 MSM (n=435) 29 38 34 MSM 39 40 26 14 26 13 Heterosexual Men (n=72) Transgender (n=23) Gender/Orientation B Reported methamphetamine use in the last 12 months among HIV-infected participants, by ethnicity, San Francisco 2008 33 22 20 Heterosexual Men 9 14 Women 0 20 0 TG Gender/Orientation C Reported methamphetamine use in the past 12 months among participants, by age and income, San Francisco 2008 Used prior 12 mos. Used prior 4 wks. 11 4 Women (n=72) Black White Latino 25 21 9 AIDS Behav (2012) 16:396–403 399 A Reported methamphetamine use among HIV-infected participants, San Francisco 2008 A Reported unprotected sex and methamphetamine use among HIV-infected participants, San Francisco 2008 e100 s 90 itrogn ieanUm678000 epR te 50 trcen ahphm234000 eP te 10 M 0 100 se 90 g U80 itron ieanm7600 epR te 50 tecrn ahphm432000 eP te 10 M 0 100 se 90 itrgon ieanUm 786000 epR te 50 tcen aphm 4300 r eP tehM21000 25 13 Used Methamphetamine Prior 12 mos No Methamphetamine Use Prior 12 mos 40 14 Women Transgender Used Methamphetamine Prior 12 mos No Methamphetamine Use Prior 12 mos 17 8 17 15 Women Transgender use in the past 12 months (v2 = 21.00, P \ 0.001). A similar trend was seen among heterosexual men who reported methamphetamine use in the past 12 months: 32% reported having had unprotected sex sometimes, often or The use of the Internet to ﬁnd sex partners on sexual net- working sites varied among all gender/orientation groups: 36% of MSM, 10% of heterosexual men, 9% of women and 16% of transgender participants reported going online to 123 d e t teo ro 100 c 90 rnp ften 80 U O 70 itgn ,se sy 60 m aw50 treeceropnR iteeoxSSm lA4100 30 20 P 0 fo 100 seU exS 90 80 itgn ind s 70 r F re 60 tceereonpR tttIereonn tranP 435000 20 10 P 0 27 10 MSM 55 27 MSM 32 12 Heterosexual Men 8 11 Heterosexual Men Gender/Orientation B Reported methamphetamine use and Internet use for sex partners among HIV-infected participants, by gender/orientation, San Francisco 2008 Gender/Orientation Fig. 2 a Reported methamphetamine use in the past 12 months and reporting of unprotected sex sometimes, often or always in the past 6 months, by gender/orientation group. Reported methamphetamine use is signiﬁcantly associated with increased reporting of unprotected sex among MSM (v2 = 21.00, P \ 0.001) and heterosexual men (v2 = 3.83, P = 0.05). Signiﬁcance was not found among women and transgender participants, though sample sizes were small (8 women and 5 transgender participants who reported methamphet- amine use in the past 12 months answered the question about unprotected sex). b Reported methamphetamine use in the past 12 months and Internet use to ﬁnd sex partners in the past 6 months, by age category. Reported Internet use to ﬁnd sex partners is more common among participants who reported methamphetamine use in the past 12 months (v2 = 35.53, P \ 0.001), though this difference remains signiﬁcant only among participants between the ages of 30 and 55, and among MSM. Reporting using the Internet to ﬁnd sex partners is more common among younger participants (v2 = 28.83, P \ 0.001), though this difference is not signiﬁcant among those reporting methamphetamine use always in the past 6 months vs. 12% of heterosexual men who denied methamphetamine use in the past 12 months (v2 = 3.83, P = 0.05) (Fig. 2a). Internet Use, 2008