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
 < .0001a
HIV
 1
 100
 1.0
 -
 6
 203
 3.0
 2.1
 9
 155
 5.8
 10.0
 0.109b
Syphilis
 3
 100
 3.0
 -
 7
 193
 3.6
 4.0
 8
 150
 5.3
 9.9
 0.605a

*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.

Baumbach et al. Harm Reduction Journal 2008 5:33   doi:10.1186/1477-7517-5-33

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