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Table 2 Comparison between blood group A and blood group O regarding epidemiological characters of COVId19 patients

From: ABO groups can play a role in susceptibility and severity of COVID-19

  Blood group (A)(381) Blood group (O)(97) Test of sig T P value
Age (years)
Mean ± SD
54.3± 9 55.3± 7 0.89 0.154
BMI (Mean ± SD) 24.7± 6 24.9± 8 0.9 0.12
  NO /% No /% χ2 P value
Male 221 (58%) 65(67%) 1.4 0.21
Female 160 (42%) 32(33%) 0.19 0.14
Smoking History:
 Non 91(23.8%) 25(25.7%) 1.24 2.14
 Mild 133(34.9%) 34(35%) 2.01 1.25
 Moderate 93(24.4%) 22(22.6%) 0.35 1.58
 Heavy 64(16.8%) 16(16.5%) 1.02 0.687
Comorbidity
 No comorbid 60(15.7%) 42(43.2%) 0.357 0.241
 HTN 210(55.1%) 20(20.6%) 4.5 0.001**
 DM 204(53.5%) 24(24.7%) 9.7 0.00**
 IHD 122(32%) 15(15.5%) 5.3 0.001**
 CVA 179(46.98%) 7(7.2%) 11.4 0.001**
 Chronic Chest dis 26(6.8%) 12(12.3%) 8.7 0.00**
  Br. asthma. 18(69.2%) 8 (66.7% ) 4.5
  Bronchiectasis 8(30.8%) 4 (33.35 ) 3.8
Severity of COVID19
 Mild low risk 283(75%) 53(54.6%) 1.75 0.025
 Mild at risk 19(4.9%) 23(23.7%) 0.214 0.021
 Moderate 31(8.1%) 11(11.3%) 2.86 0.001**
 Severe 15(3.9%) 5(5.1%) 2.98 0.001**
 Critical 30(7.8%) 3(3%) 3.24 0.001**
 MV 24(6.2%) 2(2%) 4.12 0.001**
 Died 16(4.1%) 1(1%) 3.4 0.01**
  1. HTN hypertension, DM diabetes mellitus, IHD ischemic heart diseases, CVA cerebro-vascular stroke, MV mechanical ventilation
  2. **:has significant level