ABO system | SARS-CoV2 Infected (n = 72) | OR (95% CI) | P Value* |
A—No. (%) | 17 (23.6) | 1.000 (0.58 - 1.73) | 0.999 |
B—No. (%) | 24 (33.3) | 1.595 (0.97 - 2.61) | 0.062 |
AB—No. (%) | 7 (9.7) | 2.645 (1.20 - 5.84) | 0.024 |
O—No. (%) | 24 (33.3) | 0.529 (0.32 - 0.87) | 0.010 |