Table 4. Risks factors for in-hospital mortality after hepatectomy for hepatocellular carcinoma in the octogenarian.

Variables	Cases with in-hospital mortality (%)	Odds ratio	p value
Gender (male vs. female)	5 (8.6) vs. 0 (0)	N.A.g	0.186
Diabetes mellitus (yes vs. no)	3 (9.4) vs. 2 (4.4)	2.224	0.387
Hypertension (yes vs. no)	2 (6.3) vs. 3 (7.7)	0.813	0.800
End-stage renal disease (yes vs. no)	0 (0) vs. 5 (6.8)	N.A.g	0.588
Old stroke (yes vs. no)	0 (0) vs. 5 (7.5)	N.A.g	0.571
Smoking (yes vs. no)	1 (7.7) vs. 4 (6.3)	1.250	0.847
Alcohol (yes vs. no)	0 (0) vs. 5 (7.1)	N.A.g	0.498
HBs Aga (positive vs. negative)	2 (12.5) vs. 2 (3.8)	3.645	0.191
Hepatitis C virus (positive vs. negative)	2 (7.1) vs. 2 (5.4)	1.345	0.773
ICG-15b (> 10 vs. ≤ 10(%))	2 (7.7) vs. 3 (8.6)	0.889	0.901
Hemoglobin (≤ 10 vs. > 10 (g/dL))	1 (7.7) vs. 4 (6.3)	1.250	0.847
Albumin (≤ 3.5 vs. > 3.5 (g/dL))	1 (5.0) vs. 3 (5.6)	0.894	0.925
Platelet (≤ 100 vs. > 100 (1000/uL))	1 (10.0) vs. 4 (6.0)	1.751	0.630
INRc(> 1.4 vs. ≤ 1.4)	1 (100) vs. 4 (5.6)	N.A.g	<0.001
ALTd(> 40 vs. ≤ 40 (U/L))	2 (6.5) vs. 3 (6.8)	0.943	0.950
Bilirubin total (> 1.5 vs. ≤ 1.5 (mg/dL))	0 (0) vs. 4 (5.6)	N.A.g	0.675
á-fetoprotein (> 200 vs. ≤ 200 (ng/mL))	5 (21.7) vs. 0 (0)	N.A.g	0.001
Procedure (major vs. minor (%))e	4 (16.7) vs. 1 (2.0)	9.804	0.019
OP duration (> 270 vs. ≤ 270 (min))	3 (12.0) vs. 2 (3.9)	3.341	0.182
Blood loss (> 800 vs. ≤ 800 (mL))	1 (6.7) vs. 4 (6.7)	1.000	1.000
Inflow control (yes vs. no)	3 (6.3) vs. 1 (8.3)	0.733	0.796
Tumor size (> 10 vs. ≤ 10 (cm))	0 (0) vs. 5 (7.8)	N.A.g	0.316
Surgical complications (major vs. minor/none)f	5 (25.0) vs. 0 (0)	N.A.g	<0.001

a: Hepatitis B virus surface antigen; b: Indocyanine green retention test at 15 min; c: International normalized ratio; d: Alanine aminotransferase; e: Major procedures include tri-segmentectomy, right/left lobectomy, and extended right/left lobectomy; f: Major surgical complications include grade III-IV surgical complications; g: not applicable or not done.