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Table 4 Comparison of primary outcome measures in three groups of patients treated with IVIG with the standard treatment group

From: The outcome of using intravenous immunoglobulin (IVIG) in critically ill COVID-19 patients’: a retrospective, multi-centric cohort study

Feature

Low-dose IVIG group and standard group

Medium-dose IVIG group and standard group

High-dose IVIG group and standard group

Standard group

Low IVIG

t test

p value

Standard group

Medium IVIG

t test

p value

Standard group

High IVIG

t test

p value

Number of patients

109

25

  

109

32

  

109

17

  

ICU length of stay (days)

7.33

10.24

− 1.724

0.087

7.33

9.77

− 1.614

− 1.109

7.33

7.94

0.353

0.724

Duration of hospitalization (days)

11.10

13.12

− 1.031

0.305

11.10

16.09

12.887

0.005

11.10

10.39

0.336

0.737

Mortality rate

48

13

0.248

0.618

48

18

1.033

0.310

48

11

1.189

0.275

  1. ICU: intensive care unit, IVIG: intravenous immunoglobulin