Table 1.

Patient and tumor backgrounds before propensity score matching.

Backgrounds	ORLR (n = 287)	LRLR (n = 328)	p Value
Age (years)	67.3 ± 9.8	67.7 ± 10.8	0.665
Sex ratio (Male:Female)	222:61	252:74	0.734
BMI (kg/m2)	23.1 ± 3.6	23.9 ± 3.7	0.009
Performance status
0	249	256	0.022
1	36	71
2	1	3
3	1	2
Number of tumors	1.47 ± 1.13	1.22 ± 0.60	<0.001
Tumor size (mm)	17.5 ± 11.5	16.3 ± 12.0	0.222
Tumor location
Anterolateral	178	247	0.001
Posterosuperior	109	85
Background liver pathology
NL	30	40	<0.001
CH	52	21
LF	88	103
LC	100	166
Total Billirubin (mg/dL)	0.79 ± 0.44	0.82 ± 0.53	0.404
Prothronbin time (C-P score)
1:>70% (<1.7)	269	313	0.983
2: 40–70% (1.7–2.3)	7	8
3:<40 (>2.3)	3	3
Creatinine(mg/dL)	0.88 ± 0.68	0.90 ± 0.60	0.606
Albumin(g/L)	4.05 ± 0.44	4.01 ± 0.47	0.255
Platelet count (×103/) μL	165.5 ± 180.9	216.1 ± 350.7	0.028
ICG R15	14.6 ± 8.4	15.1 ± 10.1	0.537
Ascites (C-P score)
1	282	314	0.011
2	5	19
3	0	0
Encephalopathy (C-P score)
1	286	331	0.652
2	1	2
3	0	0
Varices (C-P score)
1	256	288	0.033
2	11	29
3	6	12
Extent of resection
Partial resection/segmentectomy	252	309	0.008
Sectionectomy	20	20
≥2 sections	14	3
Previous surgery
Open Liver resection	241	120	<0.001
Laparoscopic liver resection	23	149

ORLR, open repeat liver resection; LRLR, laparoscopic repeat liver resection; BMI, body mass index; NL, normal liver; CH, chronic hepatitis; LF, liver fibrosis; LC, liver cirrhosis; C-P score, Child-Pugh score; ICGR15, Indocyanine green retention rate at 15 min; Bold and plain letters [in the left end column] make the separation between heading and selective items.