Table 2 Overall survival rate in the various subgroups and failure pattern in the entire cohort

Treatment

0.854

 RT-alone

71.9

36.6

26

 CRT

72.4

38.5

30.1

 Whole

72

36.9

26.6

Diabetes

0.035

 yes

66.5

24.1

16

 no

72.6

38.4

27.8

 upper

77.2

46.9

33.5

0.001

 middle

69.5

32.6

21.5

0.006

 lower

69.5

33.8

28.2

0.829

pTV (cm³)

< 0.001

 ≤ 32

79.8

46.7

36.1

 > 32

66.8

31

21.2

 1

90

80

70

0.21

 2

75.6

40

33.7

0.16

 3

75.9

36.7

28.5

0.1

 4

64.9

33.8

20.4

cN

0.001

 0

77.2

46.8

32.7

 1

68.1

30.4

22.5

cM

< 0.001

 0

72.8

38.2

27.4

 1

56.6

16.9

16.9

Failure Pattern (n)

Total

RT

CRT

P

 locoregional

266

226

40

0.209

 distant

132

103

29

 locoregional and distant

24

20

4

 treatment complication

20

18

2

 non-tumor disease

50

41

9

 unknown causes

36

34

2