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Table 1 Clinicopathological findings before and after matching

From: Robotic versus laparoscopic distal gastrectomy in patients with gastric cancer: a propensity score-matched analysis

 

Entire cohort

P value

Propensity-score matched cohort

P value

RDG (n = 69)

LDG (n = 88)

RDG (n = 50)

LDG (n = 50)

Age (years)

66.9 ± 10.2

72.3 ± 10.1

0.001*

69.2 ± 1.4

69.3 ± 1.4

0.942

Gender

 Male

45 (65.2%)

58 (65.9%)

0.928

31 (62.0%)

34 (68.0%)

0.529

 Female

24 (34.8%)

30 (34.1%)

19 (38.0%)

16 (32.0%)

BMI (kg/m2)

22.4 ± 3.5

23.5 ± 3.1

0.044*

23.0 ± 3.6

22.9 ± 2.7

0.893

Previous abdominal operation

 No

47 (68.1%)

57 (64.8%)

0.660

32 (64.0%)

33 (66.0%)

0.834

 Yes

22 (31.9%)

31 (35.2%)

18 (36.0%)

17 (34.0%)

Comorbidity

 No

22 (31.9%)

17 (19.3%)

0.071

13 (26.0%)

14 (28.0%)

0.822

 Yes

47 (68.1%)

71 (80.7%)

37 (74.0%)

36 (72.0%)

ASA PS score

 I

18 (26.1%)

16 (18.2%)

0.005*

12 (24.0%)

13 (26.0%)

0.886

 II

48 (69.6%)

52 (59.1%)

35 (70.0%)

33 (66.0%)

 III

3 (4.3%)

20 (22.7%)

3 (6.0%)

4 (8.0%)

Tumor size (mm)

30.0 ± 14.6

35.0 ± 23.3

0.120

31.8 ± 15.1

30.4 ± 17.6

0.666

Histological type

 Differentiated

38 (55.1%)

47 (53.4%)

0.834

28 (56.0%)

26 (52.0%)

0.688

 Undifferentiated

31 (44.9%)

41 (46.6%)

22 (44.0%)

24 (48.0%)

pT classification

 T1

48 (69.6%)

55 (62.5%)

0.423

33 (66.0%)

33 (66.0%)

0.853

 T2

8 (11.6%)

7 (8.0%)

5 (10.0%)

3 (6.0%)

 T3

6 (8.7%)

10 (11.4%)

6 (12.0%)

8 (16.0%)

 T4

7 (10.1%)

16 (18.2%)

6 (12.0%)

6 (12.0%)

pN classification

 N0

56 (81.2%)

59 (67.1%)

0.071

38 (76.0%)

39 (78.0%)

0.976

 N1

3 (4.4%)

11 (12.5%)

3 (6.0%)

3 (6.0%)

 N2

7 (10.1%)

7 (8.0%)

6 (12.0%)

6 (12.0%)

 N3

3 (4.4%)

11 (12.5%)

3 (6.0%)

2 (4.0%)

pStage

 I

51 (73.9%)

56 (63.6%)

0.252

34 (68.0%)

34 (68.0%)

0.937

 II

11 (15.9%)

15 (17.1%)

9 (18.0%)

10 (20.0%)

 III

7 (10.1%)

17 (19.3%)

7 (14.0%)

6 (12.0%)

  1. BMI body mass index, ASA American Society of Anesthesiologists, PS performance status
  2. *P < 0.05 indicates statistical significance