Table 1 Distribution of cases and controls as per their blood types
From: ABO blood grouping and COVID-19: a hospital-based study in Eastern India
Blood Group | Number of cases (% total) | Number of controls (% total) | χ2 | p value |
|---|---|---|---|---|
A | 2379 (47.6) | 3070 (26.2) | 26.94 | < 0.0001 |
B | 1278 (25.6) | 3926 (33.5) | 10.22 | < 0.0001 |
O | 1174 (23.5) | 4215 (36.0) | 15.88 | < 0.0001 |
AB | 169 (3.4) | 489 (4.12) | 2.43 | < 0.0150 |
Total | 5000 | 11,700 |