Zhao (2020)
Relationship between the ABO Blood Group and the COVID-19 Susceptibility
https://doi.org/10.1101/2020.03.11.20031096
https://www.medrxiv.org/content/10.1101/2020.03.11.20031096v2
Patient characteristics
ABO blood group (A blood group vs. Persons with other than A blood group)
COVID-19 (any condition)
Odds ratio: 1.280 (1.140-1.440) Adjusted model. Calculated odds ratio based on data reported in the article.

China

Descriptive (Case report/series)

Medical records

1775

Patients infected with SARS-CoV-2 in Wuhan Jinyintan Hospital. Controls (Wuhan Area) N=3694

none

Total

1 Day


COVID-19 (any condition)

1775

none


Patient characteristics

ABO blood group

none

Persons with other than A blood group

1105

3611

A blood group

670

1858


Odds ratio

1.280 (1.140-1.440)

No

Yes

Yes

random effects model


none

Average

Yes