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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Transfusion. 2013 Jan 10;53(0 0):2431–2440. doi: 10.1111/trf.12062

Table 3.

Bivariate and multivariable logistic regression predicting HIV positive status

Odds ratio 95% CI P-Value
Bivariate Analysis
Test-seeking tendency 2.72 1.62 – 4.56 0.0002
Medical related risks 1.83 1.13 – 2.97 0.01
Behavioral risks 5.09 2.83 – 9.13 < .0001
Multivariable Analysis
Age 0.18
 <=25 (reference) 1
 26 – 35 1.80 0.90 – 3.57
 >35 1.13 0.53 – 2.42
Sex 0.07
 Female (reference) 1
 Male 1.90 0.96 – 3.77
Blood center 0.003
 Kunming (reference) 1
 Mianyang 0.54 0.28 – 1.06
 Urumqi 0.31 0.13 – 0.77
 Luoyang 0.21 0.08 – 0.53
Education < .0001
 Less than high school (reference) 1
 High school 0.35 0.17 – 0.70
 Some college or higher 0.17 0.09 – 0.33
Test-seeking tendency 0.01
 < median 1
 >= median 2.23 1.23 – 4.05
Medical related risks 0.68
 < median 1
 >= median 1.15 0.59 – 2.22
Behavioral risks 0.0005
 < median 1
 >= median 3.77 1.79 – 7.93