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Table 1 .Overall clinic-pathologic characteristics for the study subjects.

From: Validity of upfront surgery for patients with unsuspected lymph node metastasis in esophageal cancer: a propensity scoring matching study

Variables

WL (N = 160)

UL(N = 55)

P- value

Age (year)

63.5(±9.1)

60.7 (±6.7)

0.014

Sex

Male

144

55

0.014

Female

16

0

Preoperative T stage

1

95

23

0.001

2

50

11

3

15

21

Postoperative T stage

1a

48

3

< 0.001

1b

68

13

2

19

21

3

25

18

Location of cancer

Upper thoracic

22

3

0.254

Middle thoracic

78

31

Lower thoracic

60

21

Method of surgery

Ivor Lewis

148

45

0.080

McKeown

114

10

Differentiation

Well

24

3

0.351

Moderate

109

52

Poor

27

0

Neoadjuvant therapy

No

136

26

< 0.001

Yes

24

29