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Table 1 Clinical characteristics of 93 patients with gastric cancer and its propensity score-matched results

From: The oncologic safety and accuracy of indocyanine green fluorescent dye marking in securing the proximal resection margin during totally laparoscopic distal gastrectomy for gastric cancer: a retrospective comparative study

 

Before propensity score matching (n = 93)

After propensity score matching (n = 63)

Characteristics

Non-ICG (n = 70)

ICG (n = 23)

p-value

Non-ICG (n = 42)

ICG (n = 21)

p-value

Age over 65 (%)

38 (54.3)

10 (43.5)

0.51

21 (50.0)

9 (42.9)

0.79

Gender (%)

  

0.55

  

1.000

 Male

45 (64.3)

17 (73.9)

 

29 (69.0)

15 (71.4)

 

 Female

25 (35.7)

6 (26.1)

 

13 (31.0)

6 (28.6)

 

EGD Result (%)

  

0.61

  

1.00

 AGC

10 (14.3)

5 ( 21.7)

0.61

8 (19.0)

4 (19.0)

 

 EGC

60 (85.7)

18 ( 78.3)

 

34 (81.0)

17 (81.0)

 

T (%)

  

0.34

  

1.00

 T1

60 (85.7)

19 (82.6)

 

38 (90.5)

19 (90.5)

 

 T2

9 (12.9)

3 (13.0)

 

4 ( 9.5)

2 ( 9.5)

 

 T3

1 ( 1.4)

0 ( 0.0)

 

 

 T4a

0 ( 0.0)

1 ( 4.3)

 

 

N (%)

  

0.09

  

1.00

 N0

63 (90.0)

18 (78.3)

 

37 (88.1)

18 (85.7)

 

 N1

7 (10.0)

3 (13.0)

 

6 (11.9)

3 (14.3)

 

 N3a

0 ( 0.0)

1 ( 4.3)

 

 

 N3b

0 ( 0.0)

1 ( 4.3)

 

 

Stage (%)

  

0.03

  

1.00

 I

68 (97.1)

21 (91.3)

 

41 (97.6)

21 (100.0)

 

 II

2 ( 2.9)

0 ( 0.0)

 

1 ( 2.4)

0 ( 0.0)

 

 III

0 ( 0.0)

2 ( 8.7)

    

Location (%)

  

0.44

  

0.93

 Lower

42 (60.0)

11 (47.8)

 

22 (52.4)

10 (47.6)

 

 Middle

28 (40.0)

12 (52.2)

 

20 (47.6)

11 (52.4)

 

LI (%)

  

1.00

  

0.53

 N

44 (62.9)

14 (60.9)

 

23 (54.8)

14 (66.7)

 

 Y

26 (37.1)

9 (39.1)

 

19 (45.2)

7 (33.3)

 

VI (%)

  

1.00

  

1.00

 N

68 (97.1)

23 (100.0)

 

42 (100.0)

21 (100.0)

 

 Y

2 (2.9)

0 ( 0.0)

 

0 ( 0.0)

0 ( 0.0)

 

NI (%)

  

0.73

  

1.00

 N

59 (84.3)

18 (78.3)

 

37 (88.1)

18 (85.7)

 

 Y

11 (15.7)

5 (21.7)

 

5 (11.9)

3 (14.3)

 

Tumor size (cm), mean (SD)

2.76 (1.70)

3.34 (2.95)

0.24

2.56 (1.56)

2.58 (1.58)

0.97

Dissected lymph nodes, mean (SD)

30.54 (10.63)

31.17 (8.21)

0.80

31.33 (11.95)

31.14 (8.43)

0.95

Positive lymph nodes, mean (SD)

0.16 (0.50)

1.43 (4.34)

0.02

0.17 (0.49)

0.14 (0.36)

0.84

Positive node ratio (%), mean (SD)

0.54 (1.75)

4.61 (13.75)

0.02

3.74 (1.56)

3.58 (1.52)

0.81

PRM (cm), mean (SD)

4.11 (1.79)

3.42 (1.60)

0.10

3.74 (1.56)

3.58 (1.52)

0.70

Operation time (min), mean (SD)

270.1 (37.3)

246.1 (46.7)

0.01

273.0 (36.6)

239.3 (42.3)

0.002

  1. ICG Indocyanine green, SD Standard deviation, EGD Esophagogastroduodenoscopy, LI Lymphatic invasion, VI Vascular invasion, NI Neural invasion, PRM Proximal resection margin