Table 1:

The relationship of COVID-19 with ABO blood group, age, and genus

Variable	Blood Group
	A	B	AB	O
Controls (Iran)
80,982,137	30%	24.7%	7.8%	37.5%
Death cases
76	34 (44.7%)	17 (22.4%)	4 (5.3%)	21 (27.6%)
χ2	6.000	0.383	1.385	3.030
P	0.014	0.536	0.239	0.082
Genus
Male	73 (77.7%)
Female	21 (22.3%)
χ2	28.766
P	< 0.001
Age (yr)
<20	1(1.1%)
20–39	7(7.4%)
40–59	36 (38.3%)
59<	50 (53.2%)
Mann-Whitney Test $\frac{40-59}{59<}$ P value = 0.004