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Table 3 Subgroups analysis

From: Early prone positioning in acute respiratory distress syndrome related to COVID-19: a propensity score analysis from the multicentric cohort COVID-ICU network—the ProneCOVID study

Variable

PaO2/FiO2 ratio at Day-1

p

≥ 150 mmHg (n = 1031)

< 150 mmHg (n = 1106)

Mortality Day-28, n (%)

271 (26.3%)

381 (34.4%)

< 0.0001

Mortality Day-60

312 (30.3%)

444 (40.1%)

< 0.0001

Mortality Day-90

319 (30.9%)

448 (40.5%)

< 0.0001

Invasive ventilation-free days up to Day-28 (days), median (IQR)

9 (0–18)

0 (0–14)

< 0.0001

Time between ICU admission and first prone session

 

After 24 h (n = 1013)

Before 24 h (n = 491)

 

Mortality Day-28, n (%)

339 (33.5%)

170 (34.6%)

0.656

Mortality Day-60

403 (39.8%)

193 (39.3%)

0.86

Mortality Day-90

410 (40.5%)

193 (39.3%)

0.665

Invasive ventilation-free days up to Day-28 (days), median (IQR)

0 (0–13)

0 (0–14)

0.415

  1. IQR interquartile range, PaO2 arterial partial pressure in oxygen, FiO2 fraction inspired in oxygen, ICU Intensive care unit
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Critical Care

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