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Table 1 Demographic and clinical characteristics in the LG and OG groups before and after PSM

From: Laparoscopic versus open gastrectomy for locally advanced gastric cancer after neoadjuvant chemotherapy: a comprehensive contrastive analysis with propensity score matching

Characteristics

Before PSM

After PSM

LG group [n = 80 (%)]

OG group [n = 68 (%)]

Standardized difference

LG group [n = 55 (%)]

OG group [n = 55 (%)]

Standardized difference

Age (year)

58.2 ± 8.6

57.4 ± 10.3

0.088

56.9 ± 9.2

57.4 ± 10.8

0.049

Sex

 Male

63 (78.8)

59 (86.8)

0.213

45 (81.8)

46 (83.6)

0.048

 Female

17 (21.2)

9 (13.2)

0.213

10 (18.2)

9 (16.4)

0.048

BMI (kg/m2)

22.8 ± 3.5

22.9 ± 2.6

0.006

22.9 ± 3.7

22.7 ± 2.2

0.056

CCIa

 0

46 (57.5)

49 (72.1)

0.309

40 (72.7)

38 (69.1)

0.079

 1

16 (20.0)

13 (19.1)

0.023

8 (14.5)

11 (20.0)

0.146

 2

10 (12.5)

3 (4.4)

0.294

4 (7.3)

3 (5.5)

0.074

 ≥ 3

8 (10.0)

3 (4.4)

0.218

3 (5.5)

3 (5.5)

0

ASA score

 1

10 (12.5)

9 (13.2)

0.021

6 (10.9)

9 (16.4)

0.161

 2

69 (86.3)

54 (79.4)

0.184

48 (87.3)

44 (80.0)

0.198

 3

1 (1.3)

5 (7.4)

0.302

1 (1.8)

2 (3.6)

0.111

cT stage

 2

2 (2.5)

2 (2.9)

0.025

1 (1.8)

1 (1.8)

0

 3

33 (41.3)

30 (44.1)

0.057

23 (41.8)

24 (43.6)

0.036

 4a

45 (56.3)

36 (52.9)

0.068

31 (56.4)

30 (54.5)

0.038

cN stage

 0

8 (10.0)

7 (10.3)

0.010

7 (12.7)

7 (12.7)

0

 N + 

72 (90.0)

61 (89.7)

0.010

48 (87.3)

48 (87.3)

0

cTNM stageb

 II

9 (11.3)

8 (11.8)

0.016

7 (12.7)

8 (14.5)

0.053

 III

71 (88.8)

60 (88.2)

0.016

48 (87.3)

47 (85.5)

0.053

Tumor location

 Upper third

49 (61.3)

45 (66.2)

0.102

35 (63.6)

36 (65.5)

0.040

 Middle third

9 (11.3)

10 (14.7)

0.101

7 (12.7)

8 (14.5)

0.053

 Lower third

22 (27.5)

13 (19.1)

0.200

13 (23.6)

11 (20.0)

0.087

Tumor sizec (cm)

4.3 ± 2.8

4.2 ± 2.6

0.046

4.2 ± 2.7

4.3 ± 2.7

0.030

Resection type

 Proximal

9 (11.3)

21 (30.9)

0.495

9 (16.4)

11 (20.0)

0.093

 Distal

12 (15.0)

9 (13.2)

0.052

8 (14.5)

7 (12.7)

0.053

Total

59 (73.8)

38 (55.9)

0.382

38 (69.1)

37 (67.3)

0.039

Reconstruction method

 Esophagogastrostomy

9 (11.3)

21 (30.9)

0.495

9 (16.4)

11 (20.0)

0.093

 Billroth-II gastrojejunostomy

6 (7.5)

4 (5.9)

0.064

4 (7.3)

2 (3.6)

0.164

 Roux-en-Y

65 (81.3)

43 (63.2)

0.413

42 (76.4)

42 (76.4)

0

  1. PSM propensity score matching, LG laparoscopic gastrectomy, OG open gastrectomy, BMI body mass index, CCI Charlson Comorbidity Index, ASA American Society of Anesthesiologists
  2. aAccording to the Charlson Comorbidity Index
  3. bAccording to the 8th edition of the American Joint Committee on Cancer Cancer Staging Manual
  4. cRefer to the long diameter of tumor after neoadjuvant chemotherapy
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World Journal of Surgical Oncology

ISSN: 1477-7819

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