Table 1 Basic characteristics of patients and healthy controls

Age (years)^{a, b}

63 (34-85)

51 (34-80)

BMI^a

24.8 (15.8-40.1)

25.8 (19.3-39.6)

Gender

Men

69

90

Women

9

10

Tumour localization

Larynx

17

-

Hypopharynx

9

-

Oral cavity

21

-

Oropharynx

28

-

Nasopharynx

3

-

Stage

1

6

-

2

20

-

3

17

-

4

35

-

Treatment

Surgery+radiotherapy

30

-

Radiotherapy

48

-

Smoking status

Never smoker

28

34

Former smoker

22

30

Current smoker

28

36