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Table 2 Demographic and clinical characteristics of pneumonia-associated septic shock patients by mortality

From: Predicting in-hospital mortality in pneumonia-associated septic shock patients using a classification and regression tree: a nested cohort study

  Died
(n = 2141)
Survived
(n = 2081)
P value
N Number (%) or mean (SD) N Number (%) or mean (SD)
Demographics
 Age 2141 64.6 (15.8) 2081 58.8 (16.7) < 0.001
 Sex (male) 2141 1323 (61.8) 2081 1251 (60.1) 0.277
 Body mass index 974 26.6 (7.8) 1039 27.7 (7.7) 0.001
Microbiology characteristics
 Concomitant bloodstream infection 2141 484 (22.6) 2081 392 (18.8) 0.003
 Empyema 2141 45 (2.1) 2081 74 (3.6) 0.010
 Culture positive 2141 1421 (66.4) 2081 1231 (59.2) < 0.001
 Gram positive 2141 696 (32.5) 2081 717 (34.5) 0.191
 Gram negative 2141 608 (28.4) 2081 465 (22.3) < 0.001
 Fungal 2141 16 (0.7) 2081 4 (0.2) 0.009
 Hospital-acquired infection 2141 957 (44.7) 2081 590 (28.4) < 0.001
Organ failure/support
 APACHE 2034 28.5 (8.0) 1961 22.8 (6.7) < 0.001
 Organ failure day 1 2141 4.2 (1.6) 2081 3.4 (1.3) < 0.001
 Mechanical ventilation 2141 2005 (93.6) 2081 1755 (84.3) < 0.001
Biochemistry (admission)
 WBC 2052 16.3 (17.9) 1979 16.4 (13.0) 0.757
 Platelets 2021 195 (143) 2025 216 (128) < 0.001
 Sodium 1121 137.4 (7.2) 1367 137.0 (7.0) 0.192
 Creatinine 1937 192.2 (164.6) 1892 187.5 (164.6) 0.377
 Lactate 1447 5.1 (4.6) 1357 3.1 (2.8) < 0.001
 INR 1848 1.9 (1.5) 1847 1.6 (1.1) < 0.001
 Bilirubin 1768 39.7 (82.7) 1776 20.1 (36.7) < 0.001
 Albumin 621 21.6 (6.3) 885 23.5 (6.4) < 0.001
 Immunocompromised 2141 360 (16.8) 2081 201 (9.7) < 0.001
 Time delay from shock to appropriate antimicrobials (hours) 1494 17.2 (23.6) 1554 5.0 (5.6) < 0.001