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. Author manuscript; available in PMC: 2015 Jan 1.

Published in final edited form as: Am J Addict. 2013 Jul 29;23(1):27–33. doi: 10.1111/j.1521-0391.2013.12057.x

Table 3.

Bivariate and multivariate logistic regression models predicting sexual risk behaviors in past 30 days

	Unprotected intercourse N = 485		Multiple partners N = 486

	Bivariate models OR (95% CI)	Multivariate model AOR (95% CI)	Bivariate models OR (95% CI)	Multivariate model AOR (95% CI)
Demographics
Male gender	0.96 (0.62-1.47)	1.21 (.75-1.91)	3.17 (1.55-6.45)^**	2.57 (1.22-5.41)^*
Age in years	1.04 (1.01-1.06)^**	1.03 (1.00-1.06)^*	0.97 (0.94-1.00)	0.99 (0.96-1.03)
Education in years	0.89 (0.81-0.97)^*	0.87 (0.78-0.97)^**	1.07 (0.95-1.21)	0.99 (0.85-1.15)
Married or living with sex partner	3.29 (2.13-5.08)^***	2.93 (1.85-4.65)^***	0.20 (0.11-0.38)^***	0.24 (0.12--0.46)^***
Substance abuse
Initiated opioid use for recreation	1.43 (0.94-2.18)	---	0.70 (0.40-1.23)	---
Other lifetime substance dependence	1.70 (1.10-2.61)^*	1.73 (1.10-2.71)^*	0.60 (0.33-1.07)	---
Concurrent (past month) use of:
Alcohol to intoxication	1.28 (0.78-2.11)	---	2.38 (1.33-4.25)^**	1.58 (0.85-2.97)
Cocaine	0.67 (0.40-1.14)	---	2.92 (1.58-5.40)^**	2.54 (1.31-4.92)^**
Marijuana	1.01 (0.66-1.53)	---	1.44 (0.82-2.53)	---
Stimulants	1.47 (0.59-3.64)	---	1.39 (0.51-3.74)	---
Sedatives	1.37 (0.89-2.12)	---	0.61 (0.34-1.12)	---
Heroin	2.45 (0.72-8.30)	---	0.98 (0.29-3.36)	---

^*

p < .05;

^**

p < .01;

^***

p < .001