Table 1 Clinical features of and univariate analysis of MSSCC

Total

98 (100)

23 (3–120)

35.70%

28.60%

Sex

0.904

0.464

 Female

23 (23.5)

26 (3–98)

39.10%

34.80%

 Male

75 (76.5)

17 (3–120)

34.70%

26.70%

Age

0.329

0.448

 ≤55

38 (38.8)

32 (3–120)

36.80%

28.30%

 >55

60 (61.2)

17.5 (3–120)

35.00%

27.90%

Smoking

0.038*

0.342

 No

31 (31.6)

33 (5–120)

51.60%

32.30%

 Yes

67 (68.4)

19 (3–98)

28.40%

26.90%

Alcohol

0.209

0.464

 No

41 (41.8)

24 (6–120)

46.30%

34.10%

 Yes

57 (58.2)

25 (3–98)

28.10%

24.60%

Differentiation

< 0.001*

0.001*

 Highly

32 (32.7)

42.5 (8–120)

46.90%

37.50%

 Medium

33 (33.7)

27 (6–85)

33.30%

24.20%

 Low

33 (33.7)

15 (3–89)

27.30%

24.20%

Invasion direction

0.003*

< 0.001*

 Up

43 (56.1)

15 (3–89)

45.50%

38.20%

 Down

55 (43.9)

32 (3–120)

23.30%

16.30%

T stage

0.002*

0.057

 T1

3 (3.1)

67 (31–120)

100.00%

75.00%

 T2

14 (14.3)

39.5 (9–95)

57.10%

42.90%

 T3

37 (37.8)

27 (6–120)

37.80%

27.80%

 T4

44 (44.9)

18.5 (3–76)

22.70%

20.50%

N stage

0.002*

0.022*

 N0

75 (76.5)

32 (3–120)

40.00%

29.30%

 N1

4 (4.1)

12 (5–17)

0%

0%

 N2

19 (19.4)

13 (3–89)

26.30%

31.60%

M stage

0.531

0.108

 M0

95 (95.9)

25 (3–120)

35.80%

29.50%

 M1

3 (4.1)

15.5 (3–32)

33.30%

0.00%

Clinical stage

0.015*

0.034*

 I

3 (3.1)

67 (31–120)

100.00%

100.00%

 II

9 (9.2)

54 (10–95)

50.00%

40.00%

 III

28 (28.6)

29.5 (8–98)

42.90%

28.60%

 IV

58 (59.2)

19 (3–120)

26.30%

22.80%