Table 3.

Association between latent class membership and characteristics of heroin and cocaine users in Baltimore, MD.¹

	Polysubstance vs. Heroin Injectors	Crack/Nasal-H. vs. Heroin Injectors	Crack/Nasal-H. vs. Polysubstance
Demographics
Over 33 years old	0.78 (0.46-1.33)	1.93 (1.17-3.19)^*	2.48 (1.62-3.81)^***
Female gender	0.68 (0.40-1.16)	1.14 (0.69-1.90)	1.68 (1.11-2.54)^*
Black race	0.80 (0.45-1.43)	5.60 (3.18-9.84)^***	6.97 (4.35-11.2)^***
HIV/HCV Risk Behaviors
Lifetime polydrug use	4.01 (2.23-7.23)^***	0.74 (0.45-1.24)	0.19 (0.11-0.30)^***
Smokes 20+ cigs per day	1.36 (0.80-2.31)	0.48 (0.29-0.79)^**	0.35 (0.23-0.53)^***
Positive for opioids	1.70 (0.85-3.40)	0.43 (0.24-0.80)^**	0.25 (0.15-0.42)^***
Positive for cocaine	3.25 (1.74-6.08)^***	1.78 (1.00-3.18)^*	0.55 (0.35-0.86)^*
Psychiatric disorder	1.02 (0.59-1.77)	0.95 (0.63-1.43)	0.93 (0.56-1.55)
Jail	0.70 (0.40-1.24)	0.76 (0.48-1.19)	1.07 (0.61-1.89)
Shared needle in lifetime	2.66 (1.49-4.75)^**	0.15 (0.07-0.30)^***	0.06 (0.03-0.10)^***
Casual sex	1.97 (1.01-3.83)^*	1.09 (0.56-2.10)	0.55 (0.33-0.91)^*
Sold sex	1.00 (0.54-1.86)	0.96 (0.53-1.75)	0.96 (0.59-1.56)
Paid for sex	1.50 (0.63-3.55)	2.22 (0.98-5.06)^†	1.48 (0.85-2.58)
Drugs for sex	1.19 (0.38-3.65)	2.97 (1.07-8.21)^*	2.50 (1.22-5.13)^*
Disease Status²
Hepatitis C	0.72 (0.38-1.34)	0.10 (0.06-0.18)^***	0.14 (0.07-0.29)^***
HIV	0.94 (0.32-2.73)	0.57 (0.25-1.31)	0.61 (0.22-1.69)

^†

p=0.057

p ≤ .05

^**

p < .01

^***

p < .001

Associations are given as odds ratios with 95% confidence intervals in parentheses.

Adjusted for Demographics