Table 1.

Correlates of HIV infection among first time blood donors, REDS II study in Brazil, 2007–2008.

HIV Prevalence per 100,000 donation
Characteristics	N (Donations)	N (Positive)	Prevalence	(95%CI)	p-value	AORα	95% CI	p-value
Overall
	189802	175	92.20	(78.55–105.86)
Blood Center
Recife	58751	70	119.15	(91.25–147.04)	0.03	1		0.77
Belo Horizonte	45081	32	70.98	(46.40–95.57)		1.20	(0.74 – 1.97)
São Paulo	85970	73	84.91	(65.44–104.38)		1.31	(0.72 – 2.39)
Type of Donation
Community	101529	112	110.31	(89.89–130.73)	0.02	1		0.002
Replacement	88237	63	71.40	(53.77–89.02)		0.48	(0.30 – 0.75)*
Age
age <2–5	74742	53	70.91	(51.83–89.99)	0.01	1		0.11
age ≥ 25 – <35	62779	74	117.87	(91.03–144.71)		1.58	(0.96 – 2.58)
age ≥ 35 – <45	31774	37	116.45	(78.95–153.95)		1.10	(0.58 – 2.10)
age ≥ 45 – <55	16016	6	37.46	(7.49–67.43)		0.54	(0.18 – 1.58)
age ≥ 55	4420	5	113.12	(14.02–212.22)		2.01	(0.68 – 5.98)
Gender
Female	75119	30	39.94	(25.65–54.22)	<0.01			<0.0001
Male	114683	145	126.44	(105.87–147.00)		3.44	(1.97 – 6.02)*
Education
< 8years	12947	19	146.75	(80.81–212.69)	0.02	1		0.04
Complete 8 years	17138	21	122.53	(70.16–174.91)		0.80	(0.42 – 1.50)
Complete 11 years	63291	41	64.78	(44.96–84.60)		0.46	(0.25 – 0.82)*
Complete College	15776	12	76.06	(33.04–119.09)		0.64	(0.30 – 1.36)
Race
Black	16083	15	93.27	(46.09–140.44)	0.01	1		0.43
Mixed	68449	76	111.03	(86.08–135.98)		0.71	(0.36 – 1.42)
White	69093	42	60.79	(42.41–79.17)		1.14	(0.61 – 2.15)
Other	2460	0	0.00	---
Year
2007	95179	81	85.10	(66.58–103.63)	0.30	1		0.22
2008	94623	94	99.34	(79.27–119.41)		0.73	(0.44 – 1.21)

N= number

^αAOR = adjusted odds ratio