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Table 1 Baseline demographics and outcome of 940 patients with acute respiratory distress syndrome

From: Estimated dead space fraction and the ventilatory ratio are associated with mortality in early ARDS

 Survivors n = 646Non survivors n = 294p-value
Demographics
 Age (years)61 (49–71)63 (53–72)0.03
 Male (%)399 (62.0)182 (62.0)1.00
 BMI (kg/m2)25.4 (23–28)25.2 (22–30)0.77
 APACHE IV score76 (60–97)94 (77–122)< 0.01
Underlying medical illness—no of patients (%)
 Immunodeficiency111 (17.2)67 (22.8)0.05
 Chronic respiratory insufficiency58 (9.0)30 (10.2)0.60
 Liver cirrhosis8 (1.2)11 (3.8)0.02
 Arterial hypertension201 (31.0)82 (28.0)0.31
 Diabetes mellitus101 (15.6)48 (16.3)0.83
 COPD75 (11.6)33 (11.6)1.00
ARDS etiology—no of patients (%)
 Pneumonia372 (57.6)163 (55.4)0.55
 Aspiration65 (10.0)29 (10.0)1.00
 Sepsis385 (59.6)192 (65.3)0.08
 Pancreatitis14 (2.4)8 (2.8)0.64
 Trauma85 (13.0)22 (7.5)0.01
Outcome
 Days of MV7 (3–16)5 (2–9)< 0.01
  1. Data reported as interquartile ratio
  2. BMI body mass index, APACHE acute physiology and chronic health evaluation, COPD chronic obstructive pulmonary disease, VFD at day 28 ventilator-free days and alive at day 28