Benefit of laparoscopic liver resection in high body mass index patients

Table 4 Univariate and multivariate analysis on increased blood loss

	Blood loss		Univariate	Multivariate
	< 215	≥215	P value	P value	OR (95%CI)
Number of patients	40	28
Age (yr)	68.5 ± 10.1	68.1 ± 4.5	0.558
Sex (Male/Female)	26/14	22/6	0.227
Body mass index (kg/m2)	23.1 ± 3.4	25.3 ± 4.5	0.027	0.035	1.233 (1.015-1.498)
HBV	4	6	0.297
HCV	20	12	0.561
Open liver resection	8	21	< 0.001	< 0.001	27.736 (5.926-129.811)
Tumor size (mm)	26.0 ± 11.4	29.4 ± 15.5	0.303
Total bilirubin (mg/dL)	0.76 ± 0.30	0.81 ± 0.30	0.490
Albumin (g/dL)	3.98 ± 0.55	3.84 ± 0.43	0.287
Prothrombin time (%)	103.2 ± 20.3	93.9 ± 15.6	0.046	0.030	0.947 (0.902-0.995)
Indocyanine green (%)	13.4 ± 10.7	20.3 ± 16.9	0.044
Aspartate transaminase (U/L)	34.3 ± 19.8	43.9 ± 20.7	0.056
Alanine transaminase (U/L)	28.3 ± 19.6	37.6 ± 25.2	0.955
γ-glutamy transpeptidase (U/L)	52.6 ± 50.1	75.7 ± 47.4	0.060
Alkaline phosphatase (U/L)	310.1 ± 107.1	308.6 ± 107.3	0.955
Cholinesterase (U/L)	178.9 ± 130.0	191.6 ± 103.0	0.669
White blood cell (/mm3)	4339 ± 1540	4802 ± 1716	0.249
Hemoglobin (g/dL)	12.8 ± 1.9	13.4 ± 2.2	0.218
Hematocrit (%)	37.0 ± 6.5	40.0 ± 5.7	0.056
Platelet count (× 103/mm3)	14.7 ± 7.6	12.3 ± 4.6	0.114

LLR: Laparoscopic liver resection; OLR: Open liver resection.