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Table 2 Drug use, sexual behavior, and sexually transmitted disease history in methamphetamine-using men who have sex with men at entry in the Positive Reinforcement Opportunity Project, San Francisco, 2004–2005.

From: A public health response to the methamphetamine epidemic: the implementation of contingency management to treat methamphetamine dependence

N = 143 Percent(n)
Drug use responses
Methamphetamine use
   Daily 42.7% (61)
   Weekly 43.4% (62)
   Monthly or less 13.9% (20)
Years prior methamphetamine use
   0 to 2 years 17.5% (25)
   3 to 5 years 25.9% (37)
   6 to 10 years 18.9% (27)
   More than 10 years 37.8% (54)
Route of administration1
   Smoke 69.9% (100)
   Intranasal 67.1% (96)
   Inject 54.5% (78)
   Rectal 40.6% (58)
Sexual behavior responses
Use of methamphetamine with sex
   Yes 88.1% (126)
   No 11.2% (16)
Sexual partners, past month
   None 18.2% (26)
   1–2 40.6% (58)
   3–5 18.9% (27)
   6 or more 22.4% (32)
Sexual behaviors, past month1
   Unprotected insertive anal sex 70.6% (101)
   Unprotected receptive anal sex 67.8% (97)
   Unprotected insertive vaginal sex 16.1% (23)
Sexually transmitted disease history
Syphilis, past year 20.3% (29)
Gonorrhea, past month 32.9% (47)
Chlamydia, past month 15.4% (22)
HIV status
   Positive 77.6% (111)
   Negative 21.7% (31)
  1. 1 Participants could endorse more than one response to this item.