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. Author manuscript; available in PMC: 2014 Feb 1.
Published in final edited form as: Vox Sang. 2012 Aug 15;104(2):100–109. doi: 10.1111/j.1423-0410.2012.01643.x

Table 3.

Logistic regression analysis for socio-demographics, descriptive characteristics and social capital variables among candidate blood donors according to HIV test seeker group+

Possible Test Seeker Presumed Test Seeker Self-disclosed Test Seeker

Variables Ad OR*a (95%CI) Ad ORb (95%CI) Ad ORc (95%CI)
Cognitive Social Capital
Low 1.0 1.0 1.0
Below average 1.2 (0.9 – 1.5) 1.6 (0.9 – 2.9) 2.1 (1.33.6)
Average 1.3 (1.0 – 1.7) 2.3 (1.33.9) 2.5 (1.54.2)
Above average 1.5 (1.11.9) 3.6 (2.16.2) 3.8 (2.26.3)
High 1.1 (0.8 – 1.6) 7.4 (4.213.3) 7.1 (4.112.4)

Structural Social Capital
Low 1.0 1.0 1.0
Below average 1.7 (1.32.1) 0.8 (0.6 – 1.2) 1.3 (0.9 – 1.8)
Average 1.2 (1.11.5) 1.1 (0.8 – 1.4) 1.0 (0.8 – 1.3)
Above average 1.5 (1.21.9) 0.6 (0.4 – 1.0) 0.8 (0.6 – 1.2)
High 1.1 (0.9 – 1.5) 0.7 (0.5 – 1.0) 0.7 (0.4 – 1.0)

Gender
Female 1.0 1.0 1.0
Male 1.4 (1.21.5) 1.6 (1.32.0) 2.1 (1.72.6)

Age
18–25 1.0 1.0 1.0
26–30 1.0 (0.8 – 1.2) 0.9 (0.7 – 1.3) 1.2 (0.9 – 1.6)
31–39 1.0 (0.9 – 1.2) 1.0 (0.8 – 1.3) 1.1 (0.9 – 1.5)
40+ 1.1 (0.9 – 1.3) 1.5 (1.12.0) 1.2 (0.9 – 1.6)

Race
White 1.0 1.0 1.0
Black 1.0 (0.8 – 1.2) 1.2 (0.9 – 1.7) 1.0 (0.8 – 1.4)
Mixture and others 1.0 (0.9 – 1.2) 1.1 (0.9 – 1.4) 0.7 (0.3 – 2.0)

Education
<8 years 1.0 1.0 1.0
8–10 Years 0.9 (0.7 – 1.2) 0.8 (0.5 – 1.1) 0.6 (0.4 – 0.8)
11 Years 0.9 (0.7 – 1.1) 0.6 (0.40.8) 0.7 (0.5 – 1.0)
College or more 0.6 (0.40.8) 0.3 (0.20.5) 0.4 (0.30.6)

Monthly Income
Less than R$500 (US$250) 1.0 1.0 1.0
Between R$ 501 and R$ 0.9 (0.8 – 1.2) 0.8 (0.6 – 1.1) 0.7 (0.50.9)
1,000 (US$ 251–500)
Between R$ 1,001 and R$ 0.7 (0.50.9) 0.7 (0.5 – 1.0) 0.4 (0.30.5)
3,000 (US$ 501–1500)
More than R$ 3,001 (US$ 1501) 0.5 (0.40.7) 0.4 (0.20.6) 0.2 (0.20.4)

Blood centre Location
São Paulo 1.0 1.0 1.0
Belo Horizonte 1.0 (0.8 – 1.2) 0.7 (0.5 – 1.0) 0.8 (0.6 – 1.1)
Recife 1.9 (1.62.2) 2.6 (1.93.4) 3.4 (2.64.5)

Donation Type
Community 1.0 1.0 1.0
Replacement 1.4 (1.21.6) 1.2 (0.9 – 1.5) 1.1 (0.9 – 1.5)
Deferred 1.1 (0.9 – 1.2) 1.0 (0.8 – 1.4) 1.2 (0.9 – 1.5)

Donor Status
Repeat 1.0 1.0 1.0
First-time 1.1 (0.9 – 1.2) 1.0 (0.8 – 1.2) 0.9 (0.7 – 1.1)
+

Non-test seekers is the reference group.

*

Adjusted odds ratio

a

Presumed and self-disclosed test seekers were excluded

b

Possible and self-disclosed test seekers were excluded

c

Possible and presumed test seekers were excluded