Table 3.

Crude and adjusted analysis of risk factors independently associated with infection by hepatitis B virus in 984 first-time candidate blood donors of Southwestern Goias

Risk factor		ORa crude (95% CI)b	adjusted ORc (95% Cl)	p-value
Clinical screening
	Fit donor	1.0	1.0
	Unfit donor	3.4 (2.0- 5.9)	1.5 (0.7- 3.1)	0.27
Transfusion history
	No	1.0	1.0
	Yes	2.68 (1.4-5.1)	2.3 (1.1 - 4.9)	0.02
Piercing or tattoos
	No	1.0	1.0
	Yes	2.4 (1.4-40)	2.1 (1.2-3.7)	0.01
Illicit drug use
	No	1.0	1.0
	Yes	3.2 (1.6-6.4)	2.3 (1.0-5.1)	0.04
Unprotected sex
	No	1.0	1.0
	Yes	3.4 (2 - 5.6)	1.7 (0.8-3.5)	0.12
Sexual partner with hepatitis
	No	1.0	1.0
	Yes	20.4 (4.5 -93.5)	14.7 (2.7-80.7)	0.002
History of prostitution
	No	1.0	1.0
	Yes	46 (2.3-9.2)	2.1 (0.9- 5.0)	0.09
History of sexually transmitted disease
	No	1.0	1.0
	Yes	4.4 (2.4- 8.1)	2.9 (1.4- 5.9)	0.003
Prison sentence
	No	1.0	1.0
	Yes	5.7 (1.7- 18.5)	2.7 (0.6- 11.5)	0.19

^aOR: Odds Ratio; ^bCI: confidence interval; ^cOR adjusted for gender, age, clinical screening, transfusion history, piercing tattoo, illicit drug use, unprotected sex, sexual partner with hepatitis, history of sexually transmitted disease, prostitution and prison sentence