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Table 1 Baseline characteristics of the study population (n = 457)

From: Addition of lactic acid levels improves the accuracy of quick sequential organ failure assessment in predicting mortality in surgical patients with complicated intra-abdominal infections: a retrospective study

Variables Total population Survivors (n = 407) Non-survivors (n = 50) p value
Age, years 62.86 ± 16.22 62.11 ± 16.19 68.94 ± 15.27 0.005
Sex, n (%) male/female 280 (61.3)/177 (38.7) 253 (62.2)/154 (37.8) 27 (54.0)/23 (46.0) 0.264
Body weight, kg 58.36 ± 11.58 58.38 ± 11.32 58.23 ± 13.69 0.931
BMI, kg/m2 21.90 ± 3.64 21.83 ± 3.54 22.47 ± 4.42 0.243
ASA score, n (%)     0.007
 1 131 (28.7) 120 (29.5) 11 (22.0)  
 2 124 (27.1) 114 (28.0) 10 (20.0)  
 3 153 (33.5) 137 (33.7) 16 (32.0)  
 4 45 (9.8) 34 (8.4) 11 (22.0)  
 5 4 (0.9) 2 (0.5) 2 (4.0)  
APACHE II score 21.23 ± 8.50 20.11 ± 7.86 28.26 ± 9.08 < 0.001
Comorbidity, n (%)     
 Hypertension 172 (37.6) 145 (35.6) 27 (54.0) 0.011
 Diabetes 65 (14.2) 59 (14.5) 6 (12.0) 0.633
 CRF 39 (8.5) 36 (8.8) 3 (6.0) 0.787
 Malignancy 212 (46.4) 183 (45.0) 29 (58.0) 0.081
Diagnosis, n (%)     0.632
 Perforation 382 (83.6) 338 (83.0) 44 (88.0)  
 Strangulation 58 (12.7) 54 (13.3) 4 (8.0)  
 Ischemia 17 (3.7) 15 (3.7) 2 (4.0)  
Site, n (%)     0.789
 Stomach 111 (24.3) 100 (24.6) 11 (22.0)  
 Small bowel 163 (35.7) 143 (35.1) 20 (40.0)  
 Colorectal 183 (40.0) 164 (40.3) 19 (38.0)  
Laparoscopy/open, n (%) 71 (15.5)/386 (84.5) 69 (17.0)/338 (83.0) 2 (4.0)/48 (96.0) 0.013
  1. BMI body mass index, ASA American Society of Anesthesiologists, APACHE acute physiology and chronic health evaluation, CRF chronic renal failure
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