Distribution of ABO and Rhesus Blood Group Phenotypes Among Blood Donors at Bahir Dar Blood Bank, Amhara, Northwest Ethiopia: A Retrospective Cross-Sectional Study

Figures & data

Table 1 Age and Sex Distribution of Voluntary Non-Remunerated Blood Donors from September 12/2019 to March 18/2021 at Bahir Dar Blood Bank

		Age						Total
		18–24	25–29	30–34	35–39	40–44	>45
Sex	Female	10,767	1115	453	270	168	167	12,940 (32.3)
	Male	14,737	4765	3755	1890	1009	957	27,113 (67.7%)
Total		25,504 (63.7%)	5880(14.7%)	4208(10.5%)	2160 (5.4%)	1177 (2.9%)	1124 (2.8%)	40,053 (100%)

Table 2 Occupational Distribution of Blood Donors from September 12/2019 to March 18/2021 at Bahir Dar Blood Bank

Occupation	Frequency	Percent
Civil Servant	7272	18.2
Driver	421	1.1
Private worker	6012	15.0
Student	22,676	56.6
Teacher	459	1.1
Unemploy	2421	6.0
Others	792	2.0
Total	40,053	100.0

Table 3 ABO and Rh Blood Group Distribution of Blood Donors from September 12/2019 to March 18/2021 at Bahir Dar Blood Bank

		Rh blood Group of Blood Donors		Total
		Negative (%)	Positive (%)
ABO	A	1036 (8.7%)	10,897 (91.3%)	11,933 (100.0%)
	AB	179 (8.2%)	2009 (91.8%)	2188 (100.0%)
	B	726 (7.8%)	8570 (92.2%)	9296 (100.0%)
	O	1451 (8.7%)	15,185 (91.3%)	16,636 (100.0%)
Total		3392 (8.5%)	36,661 (91.5%)	40,053 (100.0%)

Table 4 ABO and Rh Blood Group of Blood Group Distribution by Donation Site

site of Donation	ABO				Rh
	A (%)	AB (%)	B (%)	O (%)	Negative (%)	Positive (%)
Adet	296 (30.5%)	54 (5.6%)	224 (23.0%)	398(40.9%)	68 (7.0%)	904 (93.0%)
Bahirdar	7150 (29.6%)	1390 (5.8%)	5630 (23.3%)	9953 (41.3%)	1935 (8.0%)	22,188 (92.0%)
Bicolo	42 (26.1%)	9 (5.6%)	38 (23.6%)	72 (44.7%)	7 (4.3%)	154 (95.7%)
Chagni	381 (30.1%)	62 (4.9%)	287 (22.7%)	537 (42.4%)	107 (8.4%)	1160 (91.6%)
Dangila	689 (30.5%)	102 (4.5%)	504 (22.3%)	962 (42.6%)	206 (9.1%)	2051 (90.9%)
Durbete	476 (32.5%)	74 (5.0%)	315 (21.5%)	601(41.0%)	152 (10.4%)	1314 (89.6%)*
Gemejabet	98 (30.5%)	18 (5.6%)	68 (21.2%)	137 (42.7%)	44 (13.7%)	277 (86.3%)*
GendaMoy	382 (29.3%)	61 (4.7%)	325 (24.9%)	536 (41.1%)	114 (8.7%)	1190 (91.3%)
Kosober	975 (28.9%)	163 (4.8%)	786a (23.3%)	1448 (42.9%)	321 (9.5%)	3051 (90.5%)
Merawi	227 (26.7%)	35 (4.1%)*	230 (27.0%)*	359 (42.2%)	79 (9.3%)	772 (90.7%)
Meshenti	80 (25.6%)	15 (4.8%)	71 (22.8%)	146(46.8%)*	31 (9.9%)	281 (90.1%)
Mota	1060 (31.9%)	182 (5.5%)	735 (22.2%)	1341 (40.4%)*	300 (9.0%)	3018 (91.0%)
Sekela	77 (23.4%)	23 (7.0%)*	83 (25.2%)	146 (44.4%)	28 (8.5%)	301 (91.5%)
Total	11,933 (29.8%)	2188 (5.5%)	9296 (23.2%)	16,636 (41.5%)	3392 (8.5%)	36,661 (91.5%)

Notes: *Donation sites with, significantly, higher or lower proportions of B, AB, O, and Rh-positive blood group (P=0.012, and <0.0001 respectively).