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Table 1 Clinical preoperative characteristics before and after matching with propensity score matching (PSM)

From: Minimally invasive versus open right hepatectomy: comparative study with propensity score matching analysis

Variable

ORH

N = 131

MIRH

N = 47

P

ORH after PSM

N = 60

MIRH after PSM

N = 37

P

Gender (%)

  

0.97

  

1

 Female

59 (45%)

22 (46.8%)

 

27 (45%)

17 (45.9%)

 

 Male

72 (55%)

25 (53.2%)

 

33 (55%)

20 (54.1%)

 

Age (years)

58 [45–67]

59 [47.5–67]

0.88

59 [52.5–68.25]

59 [52–67]

0.80

BMI (kg/m2)

25.3 [22.3–28.5]

25.4 [22.5–27.3]

0.80

25.2 [22.1–27.7]

25.6 [22.5–27.1]

0.84

Obesity (%)

20 (17.4%)

5 (11.9%)

0.56

7 (13%)

3 (9.4%)

0.74

ASA (%)

  

0.67

  

0.84

 1–2

108 (82.4%)

37 (78.7%)

 

48 (80%)

31 (83.8%)

 

 3

23 (17.6%)

10 (21.3%)

 

12 (20%)

6 (16.2%)

 

Cardiologic comorbities (%)

13 (9.9%)

3 (6.4%)

0.57

7 (11.7%)

2 (5.4%)

0.48

Pulmonary comorbities (%)

4 (3.1%)

2 (4.3%)

0.66

2 (3.3%)

2 (5.4%)

0.63

Cirrhosis (%)

11 (8.4%)

11 (23.4%)

0.02

7 (11.7%)

7 (18.9%)

0.49

Diagnostic (%)

  

0.06

  

0.87

Benign

17 (13%)

9 (19.1%)

 

9 (15%)

7 (18.9%)

 

Metastasis

87 (66.4%)

23 (48.9%)

 

33 (55%)

19 (51.4%)

 

Malignant

26 (19.8%)

15 (31.9%)

 

18 (30%)

11 (29.7%)

 

Nodules (%)

  

0.03

  

0.95

 1

41 (35.7%)

7 (15.9%)

 

13 (21.7%)

7 (18.9%)

 

 2–3

52 (45.2%)

23 (52.3%)

 

33 (55%)

21 (56.8%)

 

 ≥ 4

22 (19.1%)

14 (31.8%)

 

14 (23.3%)

9 (24.3%)

 

Previous abdominal surgery (%)

100 (76.3%)

20 (42.6%)

< 0.0001

36 (60%)

18 (48.6%)

0.38

Chemotherapy (%)

77 (59.2%)

20 (42.6%)

0.07

28 (46.7%)

16 (43.2%)

0.91

PVE (%)

24 (18.3%)

11 (23.4%)

0.59

12 (20%)

9 (24.3%)

0.80

  1. Values with statistical significance (P < 0.05)
  2. ORH open right hepatectomy, MIRH minimally invasive right hepatectomy, PSM propensity score matching, BMI body mass index, ASA American Society of Anesthesiologists physical status score, PVE portal vein embolization