Risk ratio

95% confidence interval

p-value

COVID-19

1.17

0.77 - 1.75

0.44

Chronic heart failure

0.68

0.30 - 1.50

0.34

Connective tissue disease

0.96

0.48 - 1.91

0.91

Age

1.01

0.99 - 1.02

0.09

CFS score

1.28

1.03 - 1.58

0.02

SOFA score

1.07

1.02 - 1.13

0.002