Table 3.

Multivariate analysis of the associations between transfusion-transmissible infections and demographic characteristics of the blood donors at Dire Dawa Blood Bank in Eastern Ethiopia, July 2010 – June 2013

Characteristics	Total	Positive for any TTIs
		N (%)	COR (95%CI)	P-value	AOR (95%CI)	P-value
Sex
Female	946	45 (4.76)	1.00		1.00
Male	5430	405 (7.46)	1.61 (1.18–2.21)	0.003	1.68 (1.17–2.40)	0.005
Age group
18–24	2437	143(5.87)	1.00		1.00
25–32	2055	159(7.74)	1.35(1.06–1.69)	0.013	1.65(1.24–2.19)	0.001
33–40	1083	88(8.13)	1.42(1.08–1.87)	0.013	1.77(1.26–2.49)	0.001
≥41	801	60(7.49)	1.29(0.95–1.78)	0.101	1.59(1.09–2.31)	0.015
Occupation
Student	1781	128(7.19)	1.00		1.00
Private worker	1439	110(7.51)	1.05(0.80–1.37)	0.730	0.68(0.49–0.95)	0.023
Unemployed	810	78 (9.63)	1.38(1.02–1.84)	0.034	0.96(0.68–1.36)	0.833
Civil servant	693	41 (5.92)	0.81(0.56–1.17)	0.261	0.55(0.36–0.83)	0.004
Farmer	490	31 (6.33)	0.87(0.58–1.31)	0.509	0.54(0.34–0.86)	0.009
Driver	361	27 (7.48)	1.04(0.68–1.61)	0.845	0.69(0.43–1.09)	0.114
Private employee	309	8(2.59)	0.34(0.17–0.71)	0.004	0.24(0.11–0.51)	0.000
Daily laborer	155	8(5.16)	0.70(0.34–1.46)	0.346	0.45(0.21–0.97)	0.041
House wife	134	10(7.46)	1.04(0.53–2.03)	0.905	1.08(0.50–2.33)	0.847
Donation type
Replacement	5647	410 (7.26)	1.35(0.97–1.88)	0.080	1.12(0.79–1.61)	0.512
Volunteer	729	40 (5.49)	1.00		1.00

AOR = Adjusted odds ratio; COR=Crude odds ration; CI = Confidence interval; N = Number; TTIs=Transfusion Transmissible Infections