Table 5. Multivariable logistic regression analysis for factors associated with transfusion transmission diseases: Six years donor data from fourteen blood bank facilities in Ethiopia, n = 554,954.

Category	Have at least one TTI AOR [95%CI]	HBV AOR [95%CI]	HCV AOR [95%CI]	Treponema pallidum AOR [95%CI]	HIV AOR [95%CI]
Age, 18–24	1.00	1.00	1.00	1.00	1.00
25–34	1.2 [1.1, 1.2]*	1.1 [1.0, 1.2]	1.3 [1.1, 1.5] *	1.3 [1.1, 1.5] *	0.8 [0.7, 1.0]
35–44	1.6 [1.5, 1.7] *	1.2 [1.1, 1.3] *	1.3 [1.1, 1.7] *	3.0 [2.6, 3.5] *	1.3 [1.0, 1.6]
45–54	2.7 [2.5, 3.0] *	1.3 [1.1, 1.5] *	1.7 [1.2, 2.2] *	8.6 [7.4, 10.0] *	1.6 [1.2, 2.1] *
≥55	4.9 [4.2, 5.7] *	1.3 [0.9, 1.8]	0.8 [0.4, 1.8]	21.2 [17.5, 25.6]*	0.6 [0.3, 1.6]
Gender, Female	1.00	1.00	1.00	1.00	1.00
Male	1.2 [1.1, 1.3] *	1.4 [1.4, 1.5] *	0.9 [0.8, 1.0]	1.2 [1.1, 1.4] *	0.9 [0.8, 1.0]
Year, 2019	1.00	1.00	1.00	1.00	1.00
2014	1.8 [1.5, 2.1] *	2.2 [1.8, 2.7] *	14.7 [9.1, 23.8] *	1.3 [0.9, 1.9]	4.2 [2.9, 6.3]*
2015	1.4 [1.3, 1.6] *	1.9 [1.7, 2.1] *	3.6 [2.4, 5.3] *	0.7 [0.5, 0.8] *	1.4 [1.1, 1.8] *
2016	1.2 [1.1, 1.4] *	1.4 [1.2, 1.6] *	2.3 [1.6, 3.4] *	1.3 [1.1, 1.6] *	1.4 [1.1, 1.8] *
2017	0.8 [0.7, 0.9] *	0.9 [0.8, 1.0]	2.3 [1.6, 3.4] *	0.8 [0.7, 1.0]	0.6 [0.4, 0.7] *
2018	1.0 [0.9, 1.1]	1.2 [1.1, 1.3] *	1.0 [0.7, 1.6]	1.0 [0.8, 1.2]	0.9 [0.7, 1.2]
Occupation, Student	1.00	1.00	1.00	1.00	1.00
Civil servant	1.3 [1.2, 1.4] *	1.2 [1.1, 1.4] *	1.4 [1.1, 1.7] *	2.4 [2.0, 2.9] *	1.5 [1.2, 1.9] *
Teacher	1.1 [0.8, 1.5]	1.0 [0.7, 1.5]	1.2 [0.5, 2.9]	2.2 [1.3, 3.7] *	0.7 [0.2, 2.2]
Driver	0.9 [0.6, 1.4]	0.9 [0.5, 1.3]	1.3 [0.5, 3.6]	0.8 [0.3, 2.3]	1.9 [0.9, 4.2]
Military	1.5 [1.2, 1.7] *	1.6 [1.3, 1.9] *	1.7 [1.0, 3.0]	2.2 [1.6, 3.2] *	1.7 [1.0, 2.8]
Private worker	1.3 [1.2, 1.4] *	1.1 [1.0, 1.2]	1.2 [1.0, 1.4]	2.1 [1.8, 2.4] *	1.1 [0.9, 1.3]
Unemployed	2.4 [2.0, 2.8] *	1.6 [1.2, 2.0] *	1.1 [0.4, 2.6]	8.1 [6.1, 10.7] *	1.9 [1.1, 3.5] *
Donation mode Static	1.00	1.00	1.00	1.00	1.00
Mobile /outreach	1.4 [1.3, 1.6] *	1.6 [1.4, 1.8] *	1.6 [1.1, 2.2] *	0.9 [0.8, 1.1]	1.4 [1.0, 1.8]
Residence, Urban/AA	1.00	1.00	1.00	1.00	1.00
Semi Urban	1.4 [1.2, 1.6] *	1.6 [1.3, 1.9] *	0.6 [0.4, 1.1]	1.6 [1.3, 2.1] *	0.8 [0.5, 1.3]
Rural	1.9 [1.8, 2.0] *	2.0 [1.9, 2.2] *	1.1 [0.9, 1.3]	1.3 [1.1, 1.5] *	0.9 [0.8, 1.1]