Table 2 Phenotype frequencies of ABO blood groups among coronavirus disease 2019 cases and controls
Group | ABO blood group; N (%) | p value | pc value | |||
|---|---|---|---|---|---|---|
A | B | AB | O | |||
Controls (N = 595) | 186 (31.3) | 142 (23.9) | 62 (10.4) | 205 (34.4) | ||
All cases (N = 300) | 86 (28.7) | 80 (26.7) | 59 (19.6) | 75 (25.0) | 2.3 × 10−4 | 8.8 × 10−4 |
Recovered cases (N = 104) | 19 (18.3) | 27 (26.0) | 22 (21.1) | 36 (34.6) | 0.003 | 0.012 |
Deceased cases (N = 37) | 20 (54.1) | 3 (8.1) | 12 (32.4) | 2 (5.4) | 3.7 × 10−7 | 1.5 × 10−6 |