Table 2 Univariate analysis of prognostic factors influencing survival rate

Gender

0.112

Male

47

11

Female

24

13

Age (years)

0.082

 ≤ 60 years

42

12.6

 > 60 years

29

10.8

Tumor location

0.127

Cervical

2

9.7

Upper

23

12.4

Middle

27

11.2

Lower

19

11.8

PET length

0.061

 ≤ 3 cm

23

13.5

 > 3 cm

48

10.7

T stage

0.045

T3

43

15.4

T4

28

9.8

Lymph nodal status

0.023

N0

37

16.8

N + 

34

8.6

TNM stage

0.003

II

10

14.5

III

33

12.6

IV

28

8.3

Nadir lymphopenia

0.068

Grades 1–2

35

12.5

Grades 3–4

36

10.6

NLR

0.222

 < 2.62

29

11.9

 ≥ 2.62

42

9.9

PAR

0.047

 < 5.7 × 10^9

44

18.7

 ≥ 5.7 × 10^9

27

10.5

Serum albumin

0.78

 ≤ 2.5

39

9.6

 > 2.5

32

11.3