Table 2.

Intraoperative outcomes before and after matching with propensity score matching (PSM)

Variable	ORH N = 131	MIRH N = 47	P	ORH after PSM N = 60	MIRH after PSM N = 37	P
Associated radiofrequency (%)	6 (4.6%)	1 (2.1%)	0.68	1 (1.7%)	1 (2.7%)	1
Pringle’s maneuver (%)	36 (27.5%)	8 (17%)	0.17	17 (28.3%)	6 (16.2%)	0.26
Clamping time (min) Median (interquartile range)	15 [14.5–30]	15 [6.25–40]	0.71	12 [0–30]	0 [0–7.5]	0.07
Operative time (min) Median (interquartile range)	390 [320–480]	360 [275–480]	0.43	390 [322.5–480]	360 [260–491.25]	0.42
EBL (ml) Median (interquartile range)	500 [400–1000]	475 [250–675]	0.007	500 [400–1000]	400 [215–600]	0.01
Transfusion (%)	37 (28.2%)	9 (19.1%)	0.25	17 (28.3%)	7 (18.9%)	0.42

Values with statistical significance (P < 0.05)

ORH open right hepatectomy, MIRH minimally invasive right hepatectomy, EBL estimated blood loss