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Table 1 Study characteristics for ARDS development

From: A systematic review of biomarkers multivariately associated with acute respiratory distress syndrome development and mortality

Study

Study design

Study population

ARDS definition

Outcome

Total (n)

ARDS (n)

Age

Gender, male n (%)

Variables in multivariate analysis

Sample moment

Agrawal 2013 [23]

Prospective cohort

Critically ill

AECC

ALI

167

19

69 ± 16

8 (42.1%)

APACHE II score, sepsis

Within 24 h following admission

Ahasic 2012 [24]

Case-control

Critically ill

AECC

ARDS

531

175

60.7 ± 17.6

102 (58.2%)

Age, gender, APACHE III score, BMI, ARDS risk factor

Within 48 h following admission

Aisiku 2016 [25]

RCT (TBI trial)

Critically ill neurotrauma

Berlin

ARDS

200

52

29.0 (19.5 IQR)

50 (96.2%)

Gender, injury severity scale, Glasgow coma scale

Within 24 h following injury

Amat 2000 [26]

Case-control

Critically ill

AECC

ARDS

35

21

54 ± 16

15 (71.4%)

Not specified

At ICU admission

Bai 2017 [27]

Prospective cohort

Critically ill neurotrauma

Berlin

ARDS

50

21

48 (39–57 IQR)

10 (46.7%)

Age, gender, BMI, injury score, blood transfusion, mechanical ventilation, Marshall CT score, Glasgow coma scale

At admission

Bai 2017 [27]

Prospective cohort

Critically ill trauma

Berlin

ARDS

42

16

44 (35–56 IQR)

10 (62.5%)

Age, gender, BMI, injury score, blood transfusion, mechanical ventilation, Marshall CT score, Glasgow coma scale

At admission

Bai 2018 [28]

Prospective cohort

Stroke patients

Berlin

ARDS

384

60

64 (43–72 IQR)

22 (36.7%)

Age, gender, BMI, onset to treatment time, medical history

Within 6 h following stroke

Chen 2019 [29]

Case-control

Critically ill sepsis

Berlin

ARDS

115

57

56.3 ± 10.1

40 (70.2%)

Age, gender, BMI, smoking history, COPD, cardiomyopathy, APACHE II score, SOFA score

Within 24 h following ARDS onset or ICU admission

Du 2016 [30]

Prospective cohort

Cardiac surgery patients

AECC

ALI

70

18

57.7 ± 11.6

12 (66.7%)

Age, medical history, BMI, systolic blood pressure

Within 1 h following surgery

Faust 2020 [31]

Prospective cohort

Critically ill trauma

Berlin

ARDS

224

41

44 (30–60 IQR)

37 (90.2%)

Injury severity score, blunt mechanism, pre-ICU shock

At ED

Faust 2020 [31]

Prospective cohort

Critically ill sepsis

Berlin

ARDS

120

45

62 (52–67 IQR)

15 (33.3%)

Lung source of sepsis, shock, age

At ED

Fremont 2010 [32]

Case-control

Critically ill

AECC

ALI/ARDS

192

107

39 (26–53 IQR)

71 (66.4%)

Not specified

Within 72 h following ICU admission

Gaudet 2018 [33]

Prospective cohort

Critically ill patients

Berlin

ARDS

72

11

56 (51–63 IQR)

8 (72.7%)

Not specified

At inclusion

Hendrickson 2018 [34]

Retrospective cohort

Severe traumatic brain injury

Berlin

ARDS

182

50

44 ± 20

42 (84.0%)

Age, acute injury scale, Glasgow coma scale, vasopressor use

Within 10 min following ED arrival

Huang 2019 [35]

Prospective cohort

Critically ill sepsis

Berlin

ARDS

152

41

63.2 ± 11.0

32 (78.0%)

Age, gender, BMI, smoking history, COPD, cardiomyopathy, APACHE II score, SOFA score

Within 24 h following ICU admission

Huang 2019 [36]

Prospective cohort

Critically ill pancreatitis

Berlin

ARDS

1933

143

49 (42–60 IQR)

87 (60.8%)

Age, gender, aetiology of ARDS, APACHE II score

At admission

Jabaudon 2018 [37]

Prospective cohort

Critically ill

Berlin

ARDS

464

59

62 ± 16

46 (78.0%)

SAPS II, sepsis, shock, pneumonia

Within 6 h following ICU admission

Jensen 2016 [38]

RCT (PASS)

Critically ill

Berlin

ARDS

405

31

NR

NR

Age, gender, APACHE II score, sepsis, eGFR

Within 24 h following admission

Jensen 2016 [38]

RCT (PASS)

Critically ill

Berlin

ARDS

353*

31

NR

NR

Age, gender, APACHE II score, sepsis, eGFR

Within 24 h following admission

Jones 2020 [39]

Prospective cohort

Critically ill sepsis

Berlin

ARDS

672

261

60 (51–69 IQR)

154 (59.0%)

Pulmonary source, APACHE III score

At admission

Jones 2020 [39]

Prospective cohort

Critically ill sepsis

Berlin

ARDS

843

NR

NR

NR

Pulmonary source, APACHE III score

Within 48 h following admission

Komiya 2011 [40]

Cross sectional

Acute respiratory failure

AECC

ALI/ARDS

124

53

78 (69–85 IQR)

34 (64.2%)

Age, systolic blood pressure, VEF, chest X-ray pleural effusion

Within 2 h following emergency department arrival

Lee 2011 [41]

Prospective cohort

Critically ill

AECC

ALI/ARDS

113

50

57.6 ± 19.1

24 (48.0%)

Sepsis, BMI

Within 24 h following ICU admission

Lin 2017 [42]

Retrospective cohort

Critically ill

Berlin

ARDS

212

83

54.3 ± 20.3

53 (63.9%)

CRP, albumin, serum creatinine, APACHE II score

Within 2 h following ICU admission

Liu 2017 [43]

Prospective cohort

Critically ill

AECC

ALI/ARDS

134

19

69 ± 18

10 (52.6%)

APACHE II, sepsis severity

On arrival at ED

Luo 2017 [44]

Retrospective cohort

Severe pneumonia

AECC

ALI/ARDS

157

43

56 ± 19

25 (58.1%)

Lung injury score, SOFA score, PaO2/FiO2, blood urea

Day 1 following admission

Meyer 2017 [45]

Prospective cohort

Critically ill trauma

Berlin

ARDS

198

100

60 ± 14

62 (62.0%)

APACHE III score, age, gender, ethnicity, pulmonary infection

On arrival at ED or ICU

Mikkelsen 2012 [46]

Case-control

Critically ill

AECC

ALI/ARDS

48

24

38 ± 20

22 (91.7%)

APACHE III score

In ED

Osaka 2011 [47]

Prospective cohort

Pneumonia

AECC

ALI/ARDS

27

6

75 (51–92 range)

4 (66.7%)

Not specified

3 to 5 days following admission

Palakshappa 2016 [48]

Prospective cohort

Critically ill

Berlin

ARDS

163

73

58 (52–68 IQR)

42 (57.5%)

APACHE III score, diabetes, BMI, pulmonary sepsis

At ICU admission

Reilly 2018 [49]

Prospective cohort

Critically ill sepsis

Berlin

ARDS

703

289

60 (51–69 IQR)

170 (58.8%)

Pulmonary source, APACHE III score

Within 24 h of ICU admission

Shashaty 2019 [50]

Prospective cohort

Critically ill sepsis

Berlin

ARDS

120

44

61 (50–68 IQR)

NR

Age, transfusion, pulmonary source, shock

At ED

Shashaty 2019 [50]

Prospective cohort

Critically ill trauma

Berlin

ARDS

180

37

41 (25–62 IQR)

NR

Injury severity score, blunt mechanism, transfusion

At presentation

Shaver 2017 [51]

Prospective cohort

Critically ill

AECC

ARDS

280

90

54 (44–64 IQR)

54 (60.0%)

Age, APACHE II, sepsis

Day of inclusion

Suzuki 2017 [52]

Retrospective cohort

Suspected drug-induced lung injury

New bilateral lung infiltration

ALI/ARDS

68

39

72 (65-81IQR)

25 (64.1%)

Gender, age, smoking history, biomarkers

As soon as possible after DLI suspicion

Wang 2019 [53]

Prospective cohort

Critically ill sepsis

Berlin

ARDS

109

32

58 ± 10.7

NR

Age, gender, BMI, smoking history, COPD, cardiomyopathy, APACHE II score, SOFA score

Within 24 h following admission

Ware 2017 [54]

Prospective cohort

Critically ill trauma patients

Berlin

ARDS

393

78

42 (26–55)

56 (71.8%)

Not specified

Within 24 h following inclusion

Xu 2018 [55]

Prospective cohort

Critically ill

Berlin

ARDS

158

45

60.0 ± 17.1

35 (77.8%)

APACHE II score, Lung injury prediction score, biomarkers, sepsis

Within 24 h of ICU admission

Yeh 2017 [56]

Prospective cohort

Critically ill

AECC

ALI/ARDS

129

18

65 ± 18

10 (55.6%)

APACHE II score

On arrival at the ED

Ying 2019 [57]

Prospective cohort

Critically ill pneumonia

Berlin

ARDS

145

37

61.3 ± 10.4

23 (62.2%)

Age, SOFA score, lung injury score, heart rate

At admission

    

Total

10,667

2419

    
      

24.6%

    
  1. *Validating cohort
  2. Some studies included patients from the same cohort
  3. Abbreviations: AECC American European Consensus Conference definition of ARDS, ALI acute lung injury, APACHE acute physiology and chronic health evaluation, ARDS acute respiratory distress syndrome, BMI body mass index, COPD chronic obstructive pulmonary disease, CRP C-reactive protein, DLI drug-induced lung injury, ED emergency department, eGFR estimated glomerular filtration rate, ICU intensive care unit, LVEF left ventricular ejection fraction, SAPS simplified acute physiology score, SOFA sequential organ failure assessment