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Table 2 Phenotype frequencies of ABO blood groups among coronavirus disease 2019 cases and controls

From: Evaluating of the association between ABO blood groups and coronavirus disease 2019 (COVID-19) in Iraqi patients

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
  1. p Pearson chi-squared test probability compared to controls, pc Bonferroni corrected p