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Table 1 Baseline characteristics of the study population

From: Airway driving pressure and lung stress in ARDS patients

Characteristics Overall population (N = 150)
Age (years) 62 [47–74]
Male sex, N (%) 102 (68.0)
Body mass index (kg/m2) 24.7 [22.8–27.7]
ICU mortality, N (%) 48 (32.0)
Cause of lung injury, N (%):
 • Sepsis 46 (30.7)
 • Pneumonia 56 (37.3)
 • Trauma 15 (10.0)
 • Aspiration 7 (4.7)
 • Other 26 (17.3)
ARDS category at clinical PEEP, N (%)
 • Mild 65 (43.3)
 • Moderate 75 (50.0)
 • Severe 10 (6.7)
PaO2/FiO2 ratio 187 [146–230]
PaCO2 (mmHg)a 39.3 [35.1–45.3]
Respiratory rate (bpm)b 14 [12–18]
Minute ventilation (L/min)b 8.0 [6.6–9.7]
Tidal volume (mL/kgIBW)b 8.1 [6.7–9.3]
PEEP (cmH2O)a 10 [10–13]
  1. ARDS acute respiratory distress syndrome, PEEP positive end-expiratory pressure, PaO 2 arterial partial pressure of oxygen, FiO 2 inspired fraction of oxygen, PaCO 2 arterial partial pressure of carbon dioxide, IBW ideal body weight
  2. aData available in 143 patients
  3. bData available in 142 patients