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Table 1 Patient characteristics according to survival at day 28

From: Early-phase changes of extravascular lung water index as a prognostic indicator in acute respiratory distress syndrome patients

Patient characteristics Survivors (n = 133) Non-survivors (n = 59) pvalue
Sex (male), n (%) 88 (66.2) 37 (62.7) 0.64
Age, years 68 (23) 72 (19) 0.05
Hospital type (academic), n (%) 87 (65.4) 33 (55.9) 0.26
Hospital volume, n (%)    0.95
 ≤8 44 (33.1) 20 (33.9)  
 9 to 14 46 (34.6) 19 (32.2)  
 ≥14 43 (32.3) 20 (33.9)  
Direct lung injury, n (%) 78 (58.6) 39 (66.1) 0.39
SOFA score on day 0 10 (5) 11 (5) <0.001
Mean SOFA score for 3 days, mean ± SD 9.6 ± 4.5 11.3 ± 4.3 <0.001
Maximum SOFA score 11 (5) 13 (5) <0.001
Δ-SOFA score, mean ± SD 0.89 ± 2.1 0.53 ± 2.3 <0.001
Mean arterial pressure, mmHg 76 (24) 77 (22) 0.61
Central venous pressure, mmHg 10 (6) 10 (9) 0.89
PaO2/FiO2, mmHg 151.4 (112) 138.1 (103) 0.14
Serum albumin, mg/dL 2.5 (0.9) 2.6 (0.8) 0.84
Serum creatinine, mg/dL 0.9 (1.1) 1.4 (1.4) 0.003
Diuretic use, n (%) 68 (51.1) 28 (47.4) 0.64
Renal replacement therapy, n (%) 32 (24.1) 21 (35.6) 0.10
Steroid use, n (%) 49 (36.8) 24 (40.7) 0.61
Use of vasopressors, n (%) 91 (68.4) 44 (74.6) 0.39
Cumulative fluid balance over 48 h, mL 3,015 (4,918) 4,595 (6,187) 0.02
  1. Data were shown in median (quartile) unless otherwise presented. Hospital volume was defined as the number of patients that participated in the current analysis and was categorized into tertiles (i.e., low, medium, and high). SOFA, Sequential Organ Failure Assessment.