Retrospective Study
Copyright ©The Author(s) 2025.
World J Gastrointest Surg. May 27, 2025; 17(5): 102335
Published online May 27, 2025. doi: 10.4240/wjgs.v17.i5.102335
Table 4 Baseline characteristics in training and validation groups, n (%)
Variable
Total (n = 285)
Training group (n = 199)
Validation group (n = 85)
P value
PHLF (%)---0.504
No221157 (78.9)64 (75.3)-
Yes6442 (21.1)21 (24.7)-
Preoperative risk factors
Gender---0.98
Male141 (49.5)101 (50.8)43 (50.6)-
Female144 (50.5)98 (49.2)42 (49.4)-
Age (years)54.0 (48.0-61.0)54.0 (48.0-61.0)55.0 (49.0-62.0)0.262
BMI (kg/m2), mean ± SD22.5 ± 2.822.4 ± 2.822.6 ± 2.90.551
LOS (d), mean ± SD18.1 ± 7.517.7 ± 7.019.0 ± 8.50.175
History of hepatitis---0.266
No198 (69.5)142 (71.4)55 (64.7)-
Yes87 (30.5)57 (28.6)30 (35.3)-
Cirrhosis---0.52
No203 (71.2)140 (70.4)63 (74.1)-
Yes82 (28.8)59 (29.6)22 (25.9)-
Jaundice---0.474
No254 (89.1)179 (89.9)74 (87.1)-
Yes31 (10.9)20 (10.1)11 (12.9)-
Ascites---0.572
No252 (89.7)180 (90.5)75 (88.2)-
Yes29 (10.3)19 (9.5)10 (11.8)-
Child-Pugh score--0.198
5211 (74.0)144 (72.4)66 (77.6)-
645 (15.8)35 (17.6)10 (11.8)-
721 (7.4)16 (8)5 (5.9)-
86 (2.1)4 (2)2 (2.4)-
92 (0.7)0 (0)2 (2.4)-
Cause of liver resection---0.041
Tumor122 (42.8)77 (38.7)44 (51.8)-
Other163(57.2)122 (61.3)41 (48.2)-
TC (mmol/L), mean ± SD4.4 ± 1.14.3 ± 1.14.4 ± 1.10.625
LDL-C (mmol/L)2.6 (2.1-3.2)2.5 (2.1-3.2)2.7 (2.1-3.0)0.816
TG (mmol/L)1.2 (0.8-1.8)1.2 (0.8-1.7)1.1 (0.8-1.9)0.941
Neutrophils (109/L)3.4 (2.6-4.6)3.5 (2.6-4.6)3.4 (2.6-4.6)0.698
Lymphocytes (109/L)1.6 ± 0.61.6 ± 0.61.6 ± 0.50.447
Leukocytes (109/L)5.7 (4.6-7.1)5.7 (4.7-7.2)5.6 (4.5-7.0)0.738
Platelets (109/L)200.5 (149.0-264.0)199.0 (149.0-259.0)206.0 (156.0-279.0)0.587
Hemoglobin (g/L)128.4 ± 18.4127.8 ± 18.1129.9 ± 19.10.382
Albumin (g/L)40.6 ± 5.140.4 ± 5.241.0 ± 4.80.394
TBIL (μmol/L)14.9 (11.4-20.8)14.8 (10.9-22.4)15.2 (11.9-19.8)0.873
DBIL (μmol/L)5.0 (3.7-7.7)5.1 (3.7-7.8)4.8 (4.0-7.6)0.969
ALT (U/L)31.4 (19.0-56.4)31.5 (19.6-59.0)30.0 (18.5-46.3)0.230
AST (U/L)28.4 (21.8-45.2)28.9 (21.6-46.0)28.1 (22.0-44.6)0.905
Intraoperative risk factors
Operation mode---0.378
Laparoscopic153 (53.7)107 (53.8)46 (54.1)-
Open119 (41.8)85 (42.7)33 (38.8)-
Conversion from laparoscopic to open13 (4.6)7 (3.5)6 (7.1)-
Extensive resection---0.416
No160 (56.1)109 (54.8)51 (60)-
Yes125 (43.9)90 (45.2)34 (40)-
Operation length (min), mean ± SD327.7 ± 154.9322.1 ± 155.8340.5 ± 153.70.360
Liver blockage time (min)41.0 (22.0-72.0)40.0 (18.2-68.0)43.0 (28.0-75.0)0.294
Number of blocks3.0 (1.0-4.0)3.0 (1.0-4.0)3.0 (2.0-5.0)0.520
Total amount volume (mL), mean ± SD2684.2 ± 1155.32696.7 ± 1134.02647.2 ± 1214.20.742
Blood loss volume (mL)200.0 (100.0-400.0)200.0 (100.0-400.0)200.0 (150.0-400.0)0.102
Infusion of blood products---0.344
No254 (89.1)175 (87.9)78 (91.8)-
Yes31 (10.9)24 (12.1)7 (8.2)-
Urine volume (mL)500.0 (300.0-950.0)500.0 (300.0-912.5)500.0 (300.0-1000.0)0.995
Infusion of albumin---0.752
No71 (24.9)48 (24.1)22 (25.9)-
Yes214 (75.1)151 (75.9)63 (74.1)-
Pre-blocking PCO2 (mmHg)42.0 (37.0-48.0)42.0 (37.0-49.0)42.0 (35.0-47.0)0.480
Post-blocking PCO2 (mmHg)43.0 (36.0-49.0)43.0 (36.0-49.0)44.0 (36.0-49.5)0.805
Pre-blocking potassium (mmol/L)3.7 (3.4-4.0)3.6 (3.3-3.9)3.7 (3.5-4.0)0.072
Post-blocking potassium (mmol/L), mean ± SD4.0 ± 0.64.0 ± 0.64.1 ± 0.70.082
Pre-blocking glucose (mmol/L)5.8 (5.2-6.8)5.8 (5.2-6.8)5.8 (5.2*6.8)0.876
Post-blocking glucose (mmol/L)9.2 (7.0-11.1)8.9 (7.0-10.8)9.5 (7.5*11.4)0.181
Pre-blocking lactic acid (mmol/L)0.8 (0.6-1.2)0.8 (0.6-1.2)0.8 (0.7-1.2)0.744
Post-blocking lactic acid (mmol/L)1.6 (1.1-2.3)1.5 (1.0-2.2)1.6 (1.2-2.5)0.284