Validated model for prediction of recurrent hepatocellular carcinoma after liver transplantation in Asian population

Table 2 Comparison of perioperative data between the training and validation sets

Characteristic	Training set, n = 183	Validation set, n = 147	P-value
Age	55 ( ± 7.1)	55 ( ± 7.0)	0.768
Sex (male, %)	80%	83%	0.570
HBsAg positivity (%)	82%	80.3%	0.777
MELD	14.7 (± 7.5)	13.8 (± 7.0)	0.284
Waiting time from listing to transplantation (mo)	1 (0-89)	1 (0-81)	0.051
Size of tumor in explant (cm)	3.0 (± 1.4)	3.3 (± 2.1)	0.116
No. of tumor nodules in explant	2.1 (± 1.8)	2.3 (± 2.5)	0.609
Serum AFP level before time of LT (ng/mL)	586 ( ± 3169)	1719 ( ± 10541)	0.169
Salvage LT (%)	19.1%	24.5%	0.281
LDLT (%)	112 (62.9%)	91 (61.9%)	0.908
Microvascular invasion (%)	28.8%	32.2%	0.713
Well/mod differentiation	87.5%	81.1%	0.237
HCC recurrence	24%	23.8%	1.000
5 yr disease-free survival (%)	78.8%	76.8%	0.733
5 yr overall survival (%)	80.8%	78.7%	0.733

HBsAg: Hepatitis B surface antigen; MELD: Model of end stage liver disease; AFP: Alpha fetoprotein; LT: Liver transplantation; LDLT: Living donor liver transplantation; Well/mod differentiation: Well or moderate differentiation; HCC: Hepatocellular carcinoma.