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Distribution of ABO and Rh blood groups among controls group and COVID-19-infected patients.
| Blood group | COVID-19 patients | Control group | p-value | OR (95% CI) |
|---|---|---|---|---|
| n = 2,586 | n = 79,325 | |||
| A | 774 (29.93) | 17,340 (21.86) | <0.001 | 1.53 (1.40–1.66) |
| B | 1,081 (41.80) | 30,532 (38.49) | 0.001 | 1.15 (1.06–1.24) |
| O | 548 (21.19) | 23,298 (29.37) | <0.001 | 0.65 (0.59–0.71) |
| AB | 183 (7.08) | 8,155 (10.28) | <0.001 | 0.66 (0.57–0.77) |
| Rh | <0.001 | 4.04 (3.05–5.35) | ||
| + | 2,536 (98.07) | 73,479 (92.63) | ||
| − | 50 (1.93) | 5,846 (7.37) |
