Table 4.

Association of malaria parasitemia with different independent variables among blood donors attending Arba Minch Blood Bank from February to June 2015.

Variable	Number examined	Rate of malaria infection (%)	Crude OR	P value	Adjusted OR	P value
Sex
Male	232	6 (2.6%)
Female	184	11 (6.0%)	2.395 (0.869–6.604)	0.091	2.599 (0.889–7.594)	0.081
Age
18–27	355	15 (4.2%)
28–37	48	1 (2.1%)	0.482 (0.062–3.735)	0.640
>37	13	1 (8.3%)	1.889 (0.230–15.495)
Educational status
Illiterate	111	4 (3.6%)	0.73 (0.224–2.382)	0.853
Primary	21	1 (4.8%)	0.985 (0.12–8.096)
Secondary	75	2 (2.7%)	0.532 (0.114–2.487)
Tertiary	209	10 (4.8%)
Occupation
House wife	14	1 (7.1%)	5.346 (0.454–63.005)	0.450
Peasant/agriculture	117	6 (5.1%)	3.757 (0.744–18.976)
Employed	141	2 (1.4%)
Business/shop	79	5 (6.3%)	4.696 (0.889–24.794)
Student	65	3 (4.6%)	3.363 (0.548–20.632)
Previous malaria infection
Yes	155	6 (3.9%)	1.081 (0.392–2.984)	0.880
No	261	11 (4.2%)
Use of bed net
Yes	152	1 (0.7%)
No	264	16 (5.8%)	4.518 (1.019–20.032)	0.047	3.990 (0.866–18.384)	0.076
ABO blood type
A	136	1 (0.7%)	0.126 (0.008–2.107)	0.033	0.163 (0.009–2.896)	0.022
B	87	1 (1.1%)	0.198 (0.012–3.317)		0.292 (0.016–5.235)
AB	18	1 (5.6%)
O	175	14 (8.0%)	1.478 (0.183–11.945)		2.373 (0.266–21.195)
Rh blood type
Rh+	386	14 (3.6%)
Rh−	30	3 (10%)	2.952 (0.799–10.906)	0.104	2.683 (0.624–11.543)	0.185
Previous history of blood donation
Yes	219	4 (1.8%)
No	197	13 (6.6%)	3.798 (1.217–11.848)	0.022	3.205 (0.973–10.560)	0.056