Table 2 Relationship of preoperative platelet count with clinicopathological parameters

Gender

  Male

95

260.79 ± 96.13

0.127

72

23

0.029

  Female

24

229.67 ± 47.93

23

1

Age

  <60

59

254.86 ± 68.78

0.966

46

13

0.615

  ≥60

60

254.17 ± 106.22

49

11

Smoking history

  Yes

71

267.39 ± 105.4

0.055

44

4

0.008

  No

48

235.46 ± 53.23

51

20

Location

  Upper

15

260.93 ± 82.51

0.696

12

3

0.964

  Middle

67

248.36 ± 59.93

54

13

  Lower

37

263.05 ± 129.3

29

8

Tumor length

  <3.85 cm

64

250.18 ± 103.94

0.571

54

10

0.183

  ≥3.85 cm

55

259.54 ± 68.96

41

14

Differentiation

  Well

33

263.39 ± 136.03

0.793

26

7

0.568

  Moderate

51

250.04 ± 69.68

39

12

  Poor

35

252.66 ± 54.62

30

5

Tumor stage

  T1

18

207.56 ± 51.84

0.034

17

1

0.251

  T2

26

247.58 ± 53.27

21

5

  T3

67

263.66 ± 105.27

52

15

  T4

8

306.13 ± 58.73

5

3

Lymph node status

  Negative

75

250.89 ± 99.45

0.566

62

13

0.314

  Positive

44

260.68 ± 69.14

33

11

Pathological stages

  I

21

258.19 ± 168.65

0.233

17

4

0.636

  II

58

246.48 ± 54.6

48

10

  III

40

264.23 ± 70.43

30

10

Adjuvant treatment

  None

71

259.69 ± 105.06

0.823

56

15

0.788

  Radiotherapy

25

253.48 ± 65.68

20

5

  Chemotherapy

11

235.55 ± 43.03

10

1

  CRT

12

243.42 ± 58.82

9

3

Recurrence

  Yes

251.44 ± 58.06

0.675

66

15

0.513

  No

261.05 ± 134.37

29

9