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. Author manuscript; available in PMC: 2010 Aug 2.
Published in final edited form as: Am J Drug Alcohol Abuse. 2009;35(5):295–300. doi: 10.1080/00952990902968585

Table 2.

Comparison of sexual behaviors of female vs. male HIV-negative methamphetamine users in San Diego, CA, 2001–2005

Characteristic All (N=452) Women (N=146) Men (N=306) Reference = Men

% (n) % (n) % (n) OR 95%CI

Types of Sex Partners in Last 60 days
 Spouse/Steady 93.2 (424) 98.0 (143) 90.9 (278) 4.80 (1.43,16.01)
 Casual/Anonymous 89.0 (405) 85.6 (125) 90.5 (277) 0.62 n.s.
Mean # of Sex Partners in Last 60 days (SD)* 3.7 (11.5) 4.8 (15.9) 3.1 (8.7) 1.01 n.s.
Unprotected Vaginal Sex (last 60 days)
 Spouse/Steady: Always (vs. Sometimes) 85.4 (386) 91.8 (134) 82.4 (252) 2.39 (1.24,4.63)
 Casual/Anonymous: Always (vs. Sometimes) 69.0 (312) 69.2 (101) 69.0 (211) 1.01 n.s.
Trade sex for MA: Ever (vs. Never) 29.0 (63) 33.7 (30) 25.8 (33) 1.46 n.s.
Sex Partner with HIV(+)/unknown status
 Spouse/Steady: Yes (vs. No) 55.1 (249) 55.5 (81) 54.9 (168) 1.02 n.s.
 Casual/Anonymous: Yes (vs. No) 95.8 (433) 95.9 (140) 95.8 (293) 1.04 n.s.
Any STIs in last 60 days: Yes (vs. No) 20.0 (89) 31.0 (45) 14.6 (44) 2.63 (1.63,4.23)
Sex Partner had STI in last 60 days
 Spouse/Steady: Yes (vs. No) 14.1 (19) 20.6 (13) 8.3 (6) 2.86 (1.02,8.04)
 Casual/Anonymous: Yes (vs. No) 5.8 (21) 8.1 (9) 4.8 (12) 1.76 n.s.
Marathon Sex while high on MA: Yes (vs. No) 64.8 (293) 51.4 (75) 71.2 (218) 0.43 (0.28,0.64)
Sex Partner MA-user
 Spouse/Steady: Yes (vs. No) 97.6 (441) 98.0 (143) 97.4 (298) 1.28 n.s.
 Casual/Anonymous: Yes (vs. No) 97.6 (441) 96.6 (141) 98.0 (300) 0.56
Consume MA with sexual partner: Yes (vs No) 86.3 (390) 84.9 (124) 86.9 (266) 0.85 n.s.
Who initiated participant into MA use
 Friend: Yes (vs. No) 68.5 (309) 64.8 (94) 70.3 (215) 0.78 n.s.
 Family: Yes (vs. No) 11.7 (53) 15.2 (22) 10.1 (31) 1.59 n.s.
 Sex Partner: Yes (vs. No) 23.3 (105) 32.4 (47) 18.9 (58) 2.05 (1.31,3.21)
*

Values for these characteristics are in the form of Mean (SD) instead of % (n).

Abbreviations: SD = standard deviation; n.s. = not significant (95%CI includes 1.0); OR = odds ratio; CI = confidence interval