Table 1 Univariate logistic regression analysis results with ORs and 95% confidence intervals for each predictor.

Variables	Type	Beta	SE	OR (95% CI)	P-value
Age		0.126	0.02824	1.134(1.077–1.203)	< 0.001
Blood transfusion volume		0.002	0.00082	1.002(1.001–1.004)	0.004
Operation type
	Laparoscopic	Reference
	Open	1.163	0.47001	3.201(1.352–8.824)	0.013
Tumor location
	Cardia	Reference
	Body	− 0.541	0.49237	0.582 (0.227–1.612)	0.272
	Antrum	− 1.172	0.5383	0.31(0.107–0.917)	0.029
Blood type
	A	Reference
	B	1.249	0.60478	3.486(1.134–12.97)	0.039
	AB	− 14.928	972.3377	3.285 (5.978–95,442)	0.988
	O	1.259	0.57847	3.523(1.232–12.64)	0.029
CA125		0.02	0.00834	1.02(1.001–1.037)	0.019
TG		− 1.374	0.50528	0.253(0.086–0.621)	0.007
LDL		− 0.763	0.27571	0.466(0.267–0.789)	0.006
HGB		− 0.033	0.01001	0.968(0.949–0.987)	0.001
D-D		0	0.00004	1(1–1)	0.026
INR		3.069	1.20121	21.53(1.783–239.9)	0.011
K⁺		− 1.388	0.51167	0.25(0.089–0.661)	0.007
Cl⁻		0.177	0.05425	1.194(1.074–1.33)	0.001
Ca²⁺		− 5.764	1.59846	0.003(0–0.033)	< 0.001

GC Gastric Cancer, SE Standard Error, OR Odds Ratio, CI Confidence Interval, TG Triglycerides, LDL Low-Density Lipoprotein, HGB Hemoglobin, D-D D-Dimer, INR International Normalized Ratio.

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