Table 4.

Disclosed risk factors and demographic characteristics predicting case status. Overall and gender-specific adjusted odds ratios (95% CI) and p-values from logistic regression modeling, conditioned on donation center, Number of cases 341, number of controls 791.

Effect	AOR	95% CI	p-value
Both genders
Behavioral Factors (reference = No)
Sex with HIV+ partner	11.3	(4.1,31.7)	<.0001
IVDU or Sex Partner of IVDU	4.65	(1.8,11.7)	0.001
First time donor	4.22	(2.8,6.3)	<.0001
Potential Job Exposure	3.18	(1.7,6.0)	0.0004
Surgery last 12 months	2.07	(1.3,3.2)	0.001
Endoscopy last 12 months	2.06	(1.0,4.1)	0.04
Marital Status (reference = Married)
Separated/Divorced/Widowed	3.66	(1.8,7.4)	0.0003
Single, never married/Don’t know1	2.85	(1.8,4.5)	<.0001
Living together, not married	2.8	(1.6,4.8)	0.0002
Education (reference = >Elementary)
≤Elementary education	2.54	(1.7,3.8)	<.0001
Don’t know/Refused education	0.67	(0.1,8.5)	0.76
Donation Type (reference = Community donor)2
Other donation type	1.65	(0.8,3.3)	0.15
Replacement donor	1.06	(0.7,1.7)	0.8
Males
Behavioral Factors (reference = No)
MSM	21.6	(8.8,52.9)	<.0001
Sex with sex worker/unknown or ≥2 heterosexual partners, unprotected sex	1.82	(1.1,3.0)	0.02
Sexual Orientation (reference = Straight/Heterosexual)
Bisexual	7.18	(2.3,22.2)	0.0006
Gay/Homosexual	1.71	(0.7,4.2)	0.24
Don’t know/Refused sexual orientation	0.35	(0.1,1.2)	0.09
Females
Behavioral Factors (reference = No)
Sex Partner of MSM	13.5	(3.1,59.8)	0.001
Sex with sex worker/unknown or ≥2 heterosexual partners, unprotected sex	5.19	(2.1,12.9)	0.0004
Sexual Orientation (reference = Straight/Heterosexual)
Bisexual	4.12	(0.6,30.1)	0.16
Gay/Homosexual	1.08	(0.2,6.5)	0.94
Don’t know/Refused sexual orientation	1.88	(0.6,5.7)	0.27

¹One subject responded “don’t know” to marital status. He was included in the “Single” category

²Donation type was forced into model

NOTE: 79 (23.2%) of cases have no behavioral risk factors that are statistically significant in the model.