Seroprevalence of select bloodborne pathogens and associated risk behaviors among injection drug users in the Paso del Norte region of the United States – Mexico border

Table 2 Crude and RDS-adjusted seroprevalence of infectious diseases among study participants

	Doña Ana County, NM				Ciudad Juárez, MX				El Paso, TX				Crude % p-value
	Positive	Total*	Crude %	RDS %	Positive	Total	Crude %	RDS %	Positive	Total	Crude %	RDS %
HAV	66	97	68.0	-	-	-	-	-	105	148	70.9	73.0	0.740 ^a
HBV	56	94	59.6	-	171	203	84.2	88.3	74	137	54.8	48.6	< .0001 ^b
HCV	76	95	80.0	-	194	203	95.6	98.7	122	147	83.0	76.4	< .0001^a
HIV	1	100	1.0	-	6	203	3.0	2.1	9	155	5.8	10.0	0.109^b
Syphilis	3	100	3.0	-	7	193	3.6	4.0	8	150	5.3	9.9	0.605^a

*Total excludes participants whose sample was either insufficient or rejected for testing.
^a Chi-square test of independence used to observe differences among crude seroprevalence across sites.
^b Fisher's Exact method used to run test of independence due to > 20% of cells with less than 5 observations.

ISSN: 1477-7517