Table 3.

- Risk of blood types A, B, and O in the 5 different ethinic groups with COVID-19.

Ethnic groups	A	B	AB	† Non-O	O
*Reference population (Saudi)
3196	911(28.5%)	547(17.1%)	136 (4.25%)	1594	1602 (50.1%)
Saudi (patients)
953	284	215	114	613	340
RR	1.035	1.25	2.617	1.176	0.787
95% CI	0.920-1.163	1.091-1.453	2.060-3.324	1.092-1.266	0.712-0.869
P-value	0.6	0.001	0.001	0.001	0.001
*Reference population (Non-Saudi)
1804	504 (27.9%)	417 (23.11%)	88 (4.87%)	1009	795 (44.06%)
South Asia
1064	278	272	170	720	344
RR	0.948	1.084	2.96	1.12	0.798
95% CI	0.832-1.080	0.945-1.0243	2.313-3.792	1.093-1.212	0.716-0.890
P-value	0.4	0.2	0.001	0.002	0.001
Arabic
464	128	106	65	299	165
RR	0.990	0.990	2.641	1.092	0.857
95% CI	0.833 - 1.175	0.817 - 1.201	1.945 - 3.586	0.987 - 1.208	0.743 - 0.989
P-value	0.9	0.9	0.001	0.08	0.03
Southeast Asia
64	18	13	12	43	21
RR	1.001	0.899	3.39	1.120	0.807
95% CI	0.663 - 1.522	0.543 - 1.487	1.943 - 5.930	0.884 -1.419	0.554 - 1.175
P-value	0.9	0.6	0.001	0.3	0.2
Africa
72	16	18	18	52	20
RR	0.832	1.065	4.30	1.169	0.710
95% CI	0.531 - 1.305	0.698 - 1.624	2.712 - 6.817	0.944 - 1.446	0.480 - 1.051
P-value	0.4	0.7	0.001	0.2	0.08

Values are presented as number and percentages (%). risk, *Reference population, ¹⁸ RR: relative risk