Table 2 Combination phenotypes of the ABO and Rh blood groups and susceptibility to COVID-19
Polymorphisms | Controls (%) | COVID-19 (%) | OR | 95% CI | P | ORa | 95% CI | P | |
|---|---|---|---|---|---|---|---|---|---|
ABO | Rh | ||||||||
O | + | 344 (33.20) | 76 (25.25) | 1.0 | – | – | 1.0 | – | – |
A | + | 315 (30.41) | 88 (29.24) | 1.26 | 0.89–1.78 | 0.180 | 1.27 | 0.90–1.80 | 0.167 |
B | + | 213 (20.56) | 53 (17.61) | 1.12 | 0.76–1.66 | 0.550 | 1.12 | 0.75–1.66 | 0.559 |
AB | + | 83 (8.01) | 28 (9.30) | 1.52 | 0.93–2.50 | 0.094 | 1.54 | 0.93–2.54 | 0.088 |
O | − | 33 (3.19) | 22 (7.31) | 3.01 | 1.66–5.46 | < 0.001 | 2.97 | 1.63–5.43 | < 0.001 |
A | − | 15 (1.45) | 24 (7.97) | 7.24 | 3.62–14.4 | < 0.001 | 6.95 | 3.45–13.9 | < 0.001 |
B | − | 30 (2.89) | 8 (2.66) | 1.20 | 0.53–2.73 | 0.652 | 1.29 | 0.56–2.96 | 0.539 |
AB | − | 3 (0.29) | 2 (0.66) | 3.01 | 0.49–18.3 | 0.231 | 2.88 | 0.46–17.9 | 0.257 |
Total | 1036 (100.0) | 301 (100.0) | |||||||