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Table 2 Operative factors before and after propensity score matching among the patients in the study

From: Safety and effectiveness evaluation of a two-handed technique combining harmonic scalpel and laparoscopic Peng’s multifunction operative dissector in laparoscopic hemihepatectomy

 

Entire cohort

Propensity-matched cohort

 

HS + LPMOD (n = 98)

LPMOD (n = 47)

P value

HS + LPMOD (n = 47)

LPMOD (n = 47)

P value

Hemihepatectomy

  

0.58

  

0.68

 Left (%)

59 (60.2)

21 (44.7)

 

28 (59.6)

26 (55.3)

 

 Right (%)

39 (39.8)

21 (55.3)

 

19 (40.4)

21 (44.7)

 

Blood loss, mL (SD)

158.5 (124.2)

221.5 (176.3)

<0.01**

169.4 (133.5)

221.5 (176.3)

0.03*

Blood transfusion, n (%)

26 (26.5)

13 (27.7)

0.72

14 (29.8)

13 (27.7)

0.82

Operative time, minutes (SD)

202.4 (47.5)

265.7 (67.1)

<0.01**

210.5 (56.1)

265.7 (67.1)

0.02*

Conversion to laparotomy, n (%)

5 (5.1)

3 (6.4)

0.75

4 (8.5)

3 (6.4)

0.69

Postoperative hospital stay, days (SD)

14.1 (9.4)

13.7 (9.4)

0.80

14.0 (8.7)

13.7 (9.4)

0.83

Hospital mortality, n (%)

0

0

0

0

Resection margin$

  

0.97

  

1.00

 R0 (%)

96 (98.0)

46 (97.9)

 

46 (97.9)

46 (97.9)

 

 R1 (%)

2 (2.0)

1 (2.1)

 

1 (2.1)

1 (2.1)

 

 R2

0

0

 

0

0

 
  1. Abbreviations: HS harmonic scalpel, LPMOD laparoscopic Peng’s multifunction operative dissector, SD standard deviation
  2. $ Resection margin: R0: no microscopically identifiable tumor remnants, R1: microscopically identifiable tumor remnants R2: macroscopically identifiable tumor remnants
  3. *P<0.05; **P<0.01 between two groups