Table 4.

Blood donors characteristics and adjusted odds ratios for transfusion-transmissible infections (TTIs), 2010–2016, Brazil.

Characteristics	No. of TTIs n (%)	HIV			HBV			HCV			Syphilis			Chagas			HTLV
		Yes n (%)	OR	p	Yes n (%)	OR	p	Yes n (%)	OR	p	Yes n (%)	OR	p	Yes n (%)	OR	p	Yes n (%)		OR	p
Gender
Female	46,224 (32.02)	102 (0.07)	Ref.		816 (0.56)	Ref.		232 (0.16)	Ref.		446 (0.30)	Ref.		112 (0.07)	Ref.		57 (0.03)	Ref.
Male	98,103 (67.98)	218 (0.15)	1.01	0.954	1638 (1.13)	0.95	0.197	469 (0.32)	0.95	0.545	872 (0.60)	0.92	0.161	218 (0.15)	0.92	0.457	91 (0.06)	0.75		0.091
Marital status
Married	58,720 (40.68)	203 (0.14)	Ref.		1,124 (0.77)	Ref.		309 (0.21)	Ref.		487 (0.33)	Ref.		156 (0.10)	Ref.		51 (0.03)	Ref.
Unmarried	85,607 (59.32)	117 (0.08)	1.19	0.134	1,330 (0.92)	0.81	0.000	392 (0.27)	0.87	0.068	831 (0.57)	1.17	0.006	174 (0.12)	0.77	0.015	97 (0.06)	1.30		0.123
Educational level (years of study)
>12	41,206 (28.56)	32 (0.02)	Ref.		238 (0.16)	Ref.		73 (0.05)	Ref.		140 (0.09)	Ref.		19 (0.01)	Ref.		14 (0.01)	Ref.
≤12	103,121 (71.44)	288 (0.19)	22.52	0.000	2216 (1.53)	23.30	0.000	628 (0.43)	21.53	0.000	1178 (0.81)	21.06	0.000	311 (0.21)	40.96	0.000	134 ()	23.95		0.000
Blood donation category
Repeat	83,428 (57.80)	128 (0.08)	Ref.		442 (0.30)	Ref.		260 (0.18)	Ref.		580 (0.40)	Ref.		90 (0.06)	Ref.		61 (0.04)	Ref.
First-time	60,910 (42.20)	192 (0.13)	2.05	0.000	2,012 (1.39)	6.23	0.000	441 (0.30)	2.32	0.000	738 (0.51)	1.74	0.000	240 (0.16)	3.65	0.000	87 (0.06)	1.95		0.000
Total	144,338	320 (0.22)			2,454 (1.70)			701 (0.48)			1318 (0.91)			330 (0.22)			148 (0.10)