Table 2 Intraoperative outcomes before and after propensity score matching

Conversion to laparotomy, No. (%)

19(7.42)

0(0.00)

 < 0.001^*

11(7.80)

0(0.00)

 < 0.001^*

4.86

Hepatectomy, No. (%)

0.001^*

0.076^*

0.38

 Bile duct only

93(36.33)

173(44.47)

66(46.81)

57(40.43)

 Left hemi hepatectomy

122(47.66)

143(36.76)

47(33.33)

52(36.88)

 Right hemihepatectomy

19(7.42)

57(14.65)

12(8.51)

25(17.73)

 Left Segmentectomy

4(1.56)

3(0.77)

2(1.42)

1(0.71)

 Right Segmentectomy

6(2.34)

2(0.51)

5(3.55)

1(0.71)

 Bile duct and part of hepatectomy

12(4.69)

11(2.83)

9(6.38)

5(3.55)

 Operative time (min), mean(SD)

353.39(113.71)

342.10(96.52)

0.176

359.45(105.47)

342.43(92.42)

0.151

0.09

 No. lymph node, mean(SD)

12(4.06)

10(3.24)

0.213

12(5.12)

11(4.31)

0.542

0.08

 Vascular resection, No. (%)

 < 0.001^*

 < 0.001^*

0.53

 None

234(91.41)

298(76.61)

126(89.36)

110(78.01)

 Hepatic artery

13(5.08)

23(5.91)

11(7.80)

8(5.67)

 Portal vein

8(3.13)

14(3.60)

3(2.13)

3(2.13)

 Hepatic artery & Portal vein

1(0.39)

54(13.88)

1(0.71)

20(14.18)

 Biliary plastic, No. (%)

74(28.91)

190(48.84)

 < 0.001

61 (43.3)

74 (52.5)

0.153

0.11

 Biliary reconstruction, No. (%)

 < 0.001

 < 0.001

0.41

 Choledochojejunostomy

130(56.52)

126(34.52)

68(52.71)

40(30.77)

 Hepaticojejunostomy

100(43.48)

239(65.48)

61(47.29)

90(69.23)

 Caudate lobectomy, No. (%)

138(54.12)

220(56.70)

0.519

85(60.71)

82(58.57)

0.715

0.05

 IBL(ml), median(IQR)

200.00(100.00 ~ 500.00)

300.00(200.00 ~ 500.00)

0.685

300.00(150.00 ~ 500.00)

300.00(150.00 ~ 500.00)

0.573

0.07

 Transfusion during surgery, No.(%)

80(31.25)

150(38.56)

0.0579

47(33.33)

52(36.88)

0.533

0.07

 Transfusion Volume (ml), median(IQR)

0.00(0.00 ~ 600.00)

0.00(0.00 ~ 750.00)

0.9535

0.00(0.00 ~ 600.00)

0.00(0.00 ~ 600.00)

0.680

0.07

 R0, No. (%)

218(85.16)

341(87.66)

0.360

115(81.56)

119(84.40)

0.526

0.08