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Table 2 Demographic data in the pre- and post-implementation periods

From: Perioperative goal-directed therapy and postoperative outcomes in patients undergoing high-risk abdominal surgery: a historical-prospective, comparative effectiveness study

  Pre-implementation (n = 128) Post-implementation (n = 203) p value
Surgery    
 Colorectal 27 (21 %) 38 (19 %) 0.72
 Gynecology 19 (15 %) 22 (11 %) 0.37
 Liver resection 20 (16 %) 48 (24 %) 0.1
 Pancreatectomy 62 (48 %) 94 (46 %) 0.82
ASA    
 II 14 (11 %) 17 (8 %) 0.75
 III–IV 114 (89 %) 184 (91 %) 0.57
 V 0 (0 %) 1 (<1 %) 0.68
Age (years) 66 ± 14 63 ± 14 0.05
Height (cm) 167 ± 10 167 ± 11 0.6
Weight (kg) 75 ± 19 76 ± 17 0.61
BMI (kg/m2) 3.3 ± 0.2 3.3 ± 0.2 0.35
Duration of surgery (hours) 7.0 ± 2.2 7.8 ± 2.8 0.005
Estimated blood loss (log) 5.7 ± 1.1 5.5 ± 1.2 0.08
Procedure    
 Laparoscopic 42 (33 %) 79 (39 %) 0.3
 Open 86 (67 %) 123 (61 %) 0.3
  1. Two-sample t-test for continuous variables and Pearson’s chi-squared test for binary/categorical variables. American Society of Anesthesiologists, BMI Body Mass Index