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Retrospective Study
Copyright: ©Author(s) 2026.
World J Gastrointest Surg. Jul 27, 2026; 18(7): 119151
Published online Jul 27, 2026. doi: 10.4240/wjgs.v18.i7.119151
Table 1 Comparison of characteristics between training cohort and validation cohort, n (%)/median (interquartile range)/mean± SD
Characteristics
Training cohort (n = 286)
Validation cohort (n = 123)
P value
Age (years)65.00 (57.00-72.00)65.00 (59.00-71.00)0.784
Sex0.672
Male183 (63.99)76 (61.79)
Female103 (36.01)47 (38.21)
American Society of Anesthesiologists grade0.430
Low203 (70.98)92 (74.80)
High83 (29.02)31 (25.20)
Operation0.823
Laparoscopy164 (57.34)72 (58.54)
Laparotomy122 (42.66)51 (41.46)
Surgical duration (minutes)264.00 (210.00-315.00)252.00 (193.00-317.00)0.925
Preoperative total bilirubin (μmol/L)11.50 (8.70-14.60)11.90 (8.80-15.50)0.497
Preoperative alanine aminotransferase (U/L)14.00 (10.00-20.00)13.00 (9.00-21.00)0.869
Preoperative aspartate aminotransferase (U/L)16.00 (14.00-20.00)17.00 (14.00-21.00)0.480
Preoperative gamma-glutamyl transferase (U/L)19.00 (14.00-30.00)18.00 (13.00-25.00)0.224
Preoperative albumin (g/L)37.16 ± 4.2237.88 ± 4.350.117


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