Table 1 Clinicopathological characteristics of the patients

 Sex, n (%)

0.341

  Male

278 (64.8)

175 (63.2)

103 (67.8)

  Female

151 (35.2)

102 (36.8)

49 (32.2)

 Age (years)

0.016

  Median (range)

67 (29–89)

66 (35–89)

69 (29–89)

  Mean ± SD

65.6 ± 11.4

64.7 ± 11.2

67.1 ± 11.7

 Tumor location, n (%)

< 0.001

  Upper

108 (25.2)

67 (24.2)

41 (27.0)

  Middle

204 (47.6)

154 (55.6)

50 (32.9)

  Lower

117 (27.3)

56 (20.2)

61 (40.1)

 cT, n (%)

–

  T1

277 (64.6)

277 (100)

–

  T2

116 (27.0)

–

116 (76.3)

  T3

34 (7.9)

–

34 (22.4)

  T4

2 (0.5)

–

2 (1.3)

 cN, n (%)

< 0.001

  N0 (negative)

356 (83.0)

267 (96.4)

89 (58.6)

  N+ (positive)

73 (17.0)

10 (3.6)

63 (41.4)

 NLR

0.037

  Median (range)

2.0 (0.6–10.8)

2.0 (0.6–10.8)

2.1 (0.6–10.5)

  Mean ± SD

2.3 ± 1.3

2.2 ± 1.2

2.6 ± 1.5

 pT, n (%)

< 0.001

  T1

277 (64.6)

245 (88.4)

32 (21.1)

  T2

49 (11.4)

16 (5.8)

33 (21.7)

  T3

62 (14.5)

14 (5.1)

48 (31.6)

  T4

41 (9.6)

2 (0.7)

39 (25.6)

 pN, n (%)

< 0.001

  N0 (negative)

313 (73.0)

247 (89.2)

66 (43.4)

  N+ (positive)

116 (27.0)

30 (10.8)

86 (56.6)