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Table 4 Independent predictors of active syphilis (qRPR > = 1:8): odds ratios and 95% confidence intervals from the multivariate logistic regression model

From: Demographic determinants of syphilis seroprevalence among U.S. blood donors, 2011–2012

Variable

OR [95% CI]

Sex

 

Male

1.00

Female

0.4 [0.2-0.8]

Age

 

16-19, 30+

1.00

20-29

3.1 [1.8-5.2]

Donor history

 

Repeat

1.00

First Time

2.9 [1.7-5.1]

Race/Ethnicity

 

Caucasian

1.00

African American

15.0 [7.0-32.3]

Hispanic

5.8 [2.9-11.6]

Other

0.6 [0.1-4.6]

HIV Testing result

 

Negative

1.00

Positive

208.0 [56.6-764.2]