Table 2 Summary of patient and tumor characteristics for the cohort analyzed

Gender

  Female

41

36%

  Male

74

64%

Age at diagnosis (in years)

  Mean

57.4

  Standard deviation

15.5

  Median

56

  Range

21 – 93

  <40 years

14

12%

  40 to 49 years

24

21%

  50 to 59 years

21

18%

  60 to 69 years

26

23%

  70 to 79 years

24

21%

  80+ years

6

5%

Stage

  1

33

29%

  2

34

30%

  3

13

11%

  4

35

30%

T-category

  1

39

34%

  2

45

39%

  3

12

10%

  4

19

17%

N-category

  0

74

64%

  1

11

10%

  2

30

26%

Smoking history

  No/Never

33

30%

  Yes

78

70%

  Unknown

4

Alcohol consumption >20 g/day

  No/Never/Social

70

63%

  Past or current

41

37%

  Unknown

4

ECOG performance status

  0

69

61%

  1

34

30%

  2

7

6%

  3

3

3%

  Unknown

2