Table 2. Operative variables and postoperative outcomes.

Variables	IOERT group (n=59)	Control group (n=65)	P value
Operative method (anatomical/non-anatomical, n)	18/41	21/44	0.829
Null surgical margin (yes/no, n)	47/12	34/31	0.001
Operative time (min, mean ± SD)	297.71±78.85	237.37±88.31	<0.001
Type of blood occlusion (nil/pringle/SDRVO, n)	11/3/45	16/16/33	0.003
Warm ischemia time {min, median [IQR]}	13 [10–15]	12 [2.5–15]	0.143
Intraoperative bleeding {mL, median [IQR]}	300 [200–600]	300 [100–500]	0.261
Intraoperative blood transfusion (yes/no, n)	13/46	12/53	0.620
Postoperative blood transfusion (yes/no, n)	8/51	12/53	0.459
Postoperative complication
Bile leakage (yes/no, n)	3/56	3/62	1.000
Bleeding (yes/no, n)	5/54	4/61	0.735
Impaired wound healing (yes/no, n)	3/56	3/62	1.000
Delayed gastric emptying (yes/no, n)	5/54	1/64	0.101
Intestinal obstruction (yes/no, n)	0/59	2/63	0.497
Infection (yes/no, n)	4/55	3/62	0.708
Renal dysfunction (yes/no, n)	2/57	0/65	0.224
Transient liver impairment (yes/no, n)	0/59	1/64	1.000
Postoperative hospitalization (days, mean ± SD)	8.75±3.96	9.15±3.64	0.551
KPS score when discharged (mean ± SD)	65.34±12.03	68.77±13.44	0.138
30-day operative mortality (yes/no, n)	0/59	0/65	–
RILD (yes/no, n)	0/59	0/65	–

Continuous variables consistent with normal distribution were expressed as mean ± SD and compared by Student’s t-test. Continuous variables consistent with non-normal distribution were expressed as median ± IQR and compared by rank-sum test. Categorical variables were compared by chi-square test or Fisher’s exact test, as appropriate. Child-Pugh C status on postoperative day 7. IOERT, intraoperative electron radiotherapy; SD, standard deviation; SDRVO, selective and dynamic region-specific vascular occlusion; IQR, interquartile range; KPS, Karnofsky performance status; RILD, radiation-induced liver disease.