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Table 1 Demographic and clinical characteristics of ARDS patients

From: Serum sphingosine-1-phosphate levels and Sphingosine-1-Phosphate gene polymorphisms in acute respiratory distress syndrome: a multicenter prospective study

Characteristic Value (n = 121)
Age, years 61.0 (43.5–69.0)
Male sex 84 (69.4)
Current smokers 35 (28.9)
ARDS risk factor
 Sepsis 71 (58.7)
 Pneumonia 22 (18.2)
 Aspiration 12 (11.6)
 Acute pancreatitis 16 (15.7)
 Vasopressors use at admission 36 (29.8)
Coexisting conditions
 Hypertension 33 (27.3)
 Diabetes 16 (13.2)
 Coronary heart disease 11 (9.1)
 Cerebrovascular disease 15 (12.4)
 Chronic renal disease 20 (16.5)
 COPD or asthma 11 (9.1)
 Cancer 11 (9.1)
Laboratory values on diagnosis of ARDS
 WBC count, × 109/L 12.7 (10.14–17.5)
 Hematocrit, % 28.0 (23.5–34.1)
 Platelet count, × 109/L 174 (92.5–259)
 Serum bilirubin, μmol/L 26.3 (12.5–49.8)
 Serum creatinine, μmol/L 120.6 (69.5–173.9)
 Serum albumin, g/L 29.4 (27.3–31.95)
 APACHE II score 25 (21–29)
 No. of organ failures 2 (0–3)
 Lowest PaO2/FiO2 ratio 170.4 (124.0–257.0)
Berlin categories
 Mild 44 (36.4)
 Moderate 56 (46.3)
 Severe 21 (17.4)
 Days in ICU 16.0 (10.0–29.5)
 Ventilator-free days 12.0 (7.0–21.0)
 Death in hospital 33 (27.3)
  1. Continuous variables are presented as median (interquartile range); categorical variables are presented as No.(%)
  2. ARDS Acute respiratory distress syndrome, WBC white blood cell, APACHE II Acute Physiology and Chronic Health Evaluation II, No. of organ failures includes only non-pulmonary organ failures; ICU intensive care unit