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Table 1 Characteristics of cohorts included in systematic review

From: Lower gut dysbiosis and mortality in acute critical illness: a systematic review and meta-analysis

First author

Year of publication

Country

Number of participants

Number and type of centres

Sampling

Subspeciality or diagnostic group

Zaborin

2014

USA

14

1

Mixed

Adult

Cross-sectional

 

Rogers

2016

USA

37

1

Mixed

Paediatric

Cross-sectional

 

Yeh

2016

USA

32

1

Surgical

Adult

Longitudinal

 

McDonald

2016

USA, Canada

115

5

Mixed

Adult

Longitudinal

 

Howard

2017

USA

12

1

Surgical

Adult

Longitudinal

Trauma

Lankelma

2017

Netherlands

34

1

Mixed

Adult

Cross-sectional

 

Lamarche

2018

Canada

34

2

Mixed

Adult

Cross-sectional

 

Wan

2018

China

15

1

Medical

Adult

Cross-sectional

 

Freedberg

2018

USA

301

1

Medical

Adult

Cross-sectional

 

Aardema

2018

Netherlands

97

1

Surgical

Adult

Longitudinal

Cardiosurgical

Bansal

2018

Canada

9

1

Mixed

Adult

Longitudinal

 

Wijeyesekera

2019

UK

60

3

Mixed

Paediatric

Longitudinal

Sepsis

Xu

2019

China

98

1

Surgical

Adult

Longitudinal

Neurosurgical

Ravi

2019

England

24

1

Mixed

Adult

Longitudinal

 

Liu

2020

China

64

1

Mixed

Adult

Cross-sectional

Sepsis

Ojima

2020

Japan

71

1

Mixed

Adult

Longitudinal

 

Burmeister

2020

USA

67

1

Surgical

Adult

Cross-sectional

Trauma

Fontaine

2020

France

31

1

Medical

Adult

Longitudinal

 

Chernevskaya

2020

Russia

18

2

Surgical

Adult

Longitudinal

Neurosurgical; nosocomial pneumonia

Agudelo-Ochoa

2020

Columbia

155

5

Medical

Adult

Longitudinal

Sepsis

Du

2021

China

25

1

Medical

Paediatric

Cross-sectional

Sepsis

Garcia

2021

Spain

62

1

Medical

Adult

Longitudinal

Liver Failure

Liu

2021

China

20

1

Medical

Paediatric

Cross-sectional

 

Wei

2021

China

61

1

Medical

Adult

Cross-sectional

 

Kuo

2021

USA

78

1

Mixed

Adult

Longitudinal

 

Prevel

2022

France

57

1

Medical

Adult

Longitudinal

 
  1. Studies attempted for inclusion in meta-analysis are highlighted in bold