Table 2.

Demographics of On-site and Off-site HIV-negative blood donors, 2009–2011, Brazil (N=901)

	On-site Donors		Off-site Donors		Total
Variable	N	%	N	%	N	%	p
Gender
Male	557	70.3	69	63.3	626	69.5	0.136
Female	235	29.7	40	36.7	275	30.5
Total	792		109		901
Age
18–25	189	23.9	22	20.2	211	23.4	0.023
26–30	130	16.4	19	17.4	149	16.5
31–39	235	29.7	21	19.3	256	28.4
40+	237	29.9	47	43.1	284	31.5
Missing	1	0.1	0	0.0	1	0.1
Education
< 8 years	65	8.2	12	11.0	77	8.5	0.716
8 to 11 years	484	61.1	65	59.6	549	60.9
> 11 years	240	30.3	32	29.4	272	30.2
Missing	3	0.4	0	0.0	3	0.3
Marital status
Single	299	37.7	29	26.6	328	36.4	0.015
Married	445	56.2	66	60.5	511	56.7
Separated	47	5.9	14	12.8	61	6.7
Missing	1	0.12	0	0	1	0.1
Ethnicity
White	391	49.3	59	54.1	450	49.9	0.390
Black	134	16.9	18	16.5	152	16.8
Mullatto	146	18.4	23	21.1	169	18.7
Other/Refuse	120	15.1	9	8.2	129	14.3
Missing	1	0.1	0	0	1	0.1
Donor status
First-time	439	55.4	51	46.8	490	54.4	0.007
Repeat	353	44.6	57	52.3	410	45.5
Missing	0	0.0	1	0.9	1	0.1
Blood Center/loca tion
Hemope – Recife	194	24.5	21	19.3	215	23.9	0.014
Hemominas – Belo Horizonte	194	24.5	21	19.3	215	23.9
FPS – São Paulo	196	24.7	43	39.4	239	26.5
Hemorio – Rio de Janeiro	208	26.3	24	22.0	232	25.7