Table 2.

Factors independently associated with incarceration, injection while incarcerated and receptive syringe sharing while incarcerated among make IDUs in Tijuana, Mexico.^†*

	Adjusted odds ratio (95% confidence interval)
	(a) Incarcerated (N=863)	(b) Injection while incarcerated (N=681)	(c) Receptive sharing while incarcerated (N=404)
Age (per year)			0.97 (0.94, 1.00)
Ever traveled to US	1.81 (1.12, 2.95)
Deported to Tijuana	1.61 (1.07, 2.43)
Injected speedball		1.50 (1.06, 2.12)
Years since first injection	1.06 (1.03, 1.09)	1.03 (1.01, 1.05)
Injected heroin alone¥			8.50 (1.63, 44.21)
Injected methamphetamine alone¥	1.92 (1.24, 2.97)
Injected daily¥			2.17 (1.19, 3.96)
Receptive syringe sharing¥		2.46 (1.75, 3.45)
Inject most often in a shooting gallery¥			2.39 (1.30, 4.41)
Arrested for sterile syringes		1.98 (1.41, 2.77)
Arrested for carrying drugs	2.03 (1.36, 3.02)
>1 incarceration	NA		1.80 (1.05, 3.08)
Sex with a man in jail/prison	NA	3.59 (1.65, 7.83)	6.18 (1.78, 21.49)

^†Models are adjusted for the RDS recruitment method. Reference groups are a) never incarcerated, b) did not inject while incarcerated, c) injected while incarcerated but did not share syringes.

^*All values P < 0.05

^¥past 6 months