Table 2.

Selected characteristics of sexual behaviors and STI history among subjects assessed at substance abuse treatment sites for STIs between April and December 2001, n = 551

Characteristics	%	% By gender		% By program
N	Total 551	Male 372	Female 179	Detoxa 484	MMb 67
Prior STIs
Any STI	54	44	73	51	75
C. trachomatis	15	8	29	14	19
N. gonorrhoeae	26	26	25	26	24
HIV	10	9	12	6	37
Current genitourinary symptoms
Any symptom	14	9	26	14	12
Vaginal odor	19	–	11	11	9
Discharge	8	2	20	8	6
Burning upon urination	5	5	7	6	3
Sores in genital area	3	3	2	3	1
Sexually active, prior 2 monthsc	79	78	81	81	63
Number of partners, prior 2 monthsd
0	21	22	18	19	36
1	46	46	45	45	51
>1	33	32	37	36	13
2–3	21	20	23	23	9
4 or more	13	12	14	14	4
Involved in exchanges of sex for money and/or drugs, prior 2 monthse	21	17	30	22	7
Exchanged sex for money and/or drugs	15	8	29	16	3
Exchanged money and/or drugs for sex	10	12	5	10	2
Reported condom use frequency among subjects reporting > 1 partner, previous 2 monthsf
Always	34	36	29	33	56
Most of the time	14	11	18	14	0
Some of the time	20	16	26	20	11
Never	33	36	27	32	33

All percentages are column percents.

^aDetoxification center.

^bMethadone Maintenance Program.

^cMissing 1 data point.

^dNumber of sexual partners (including anal, oral, and vaginal sex) of either sex in the previous 2 months, missing 1 data point.

^ePercent of those who were sexually active during prior 2 months (n = 434).

^fPercent of those who had more than one partner during the previous 2 months (n = 184).