Table 1 Baseline demographics in the cohort of ARDS patients, by those who died and who survived.

From: Identification of four latent classes of acute respiratory distress syndrome using PaO2/FIO2 ratio: an observational cohort study

 

Alive (121)

Dead (88)

p value

Age (years)

46 [36–61]

60 [49–71]

 < 0.01

APACHE II score

21 [16–26]

27 [22–34]

 < 0.01

Charlson co-morbidity score

2 [1–3]

2 [2–4]

0.267

PaO2: FIO2 ratio day 1

114 [83–158]

119 [73–170]

0.56

Compliance (day 1) (ml/cmH2O)

32 [25–38]

26 [22–32]

0.01

Vt/Kg day 1 (ml)

5.8 [4.6–7.7]

6.2 [5.3–7.9]

0.37

PEEP day 1 (cmH2O)

10 [8–14]

10 [8–12]

0.04

Plateau pressure day 1 (cmH2O)

28 [23–30]

30 [26–32]

0.13

Days ventilated

11 [6–17]

7 [2–14]

 < 0.01

ARDS etiology (%)

 Pneumonia

81%

66.3%

0.01

 Non-lung sepsis

9.5%

15.6%

0.20

 Other

9.5%

18.1%

0.11

  1. Days ventilated refers to mechanical ventilation only.
  2. APACHE acute physiology, age and chronic health evaluation score, PEEP positive end expiratory pressure.
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