Table 1 Clinicopathological factors depending on the distance of the proximal resection margin (PRM) in the patients who underwent curative total gastrectomy

Gender

0.305

Male

35

42

62

139

Female

33

31

42

106

Age (years)

0.403

≤60

28

35

50

113

>60

40

38

54

132

T-stage

<0.001

T1

2

21

36

59

T2

24

17

37

78

T3

40

28

29

97

T4

2

7

2

11

N-stage

<0.001

N0

11

27

52

90

N1

14

19

23

56

N2

13

8

10

31

N3

30

19

19

68

Vascular invasion

0.007

Absent

37

54

78

169

Present

31

19

26

76

Lymphatic invasion

0.003

Absent

7

23

33

63

Present

31

19

71

182

Neural invasion

<0.001

Absent

6

28

37

71

Present

62

45

67

174

Histology

0.045

Differentiated

13

18

34

65

Undifferentiated

55

55

70

180

Lauren’s classification

0.316

Intestinal

9

16

28

53

Diffuse

43

42

49

134

Mixed

16

15

27

58

Tumor size (cm)

<0.001

≤2

0

6

13

19

2 - 5

8

26

43

77

>5

60

41

48

149

Tumor location

<0.001

Lower third

0

1

13

14

Middle third

13

34

73

120

Upper third

34

31

18

83

Entire

21

7

0

28