Table 1 Description of cohort

Age

Mean (SD)

52.4

(14.4)

Gender

Female

16

38.1

Male

26

61.9

T stage

I

15

35.7

II

10

23.8

III

6

14.3

IV

11

26.2

N stage

0

14

33.3

I

11

26.2

II

13

31.0

III

4

9.5

M stage

0

39

92.9

X

3

7.1

AJCC stage

I

4

9.5

II

10

23.8

III

12

28.6

IV

16

38.1

GTVp volume (mL)

Median (Q1–Q3)

25.8

(12.6–47.7)

PTV 70 Gy (mL)

Median (Q1–Q3)

210.6

(115.6–330.8)

PTV all (mL)

Median (Q1–Q3)

808.6

(686.8–1022.1)

MD parotid L (mL)

Median (Q1–Q3)

3598

(3242–4222)

MD parotid R (mL)

Median (Q1–Q3)

3564

(3308–3859)

MD parotid L + R/2 (mL)

Median (Q1–Q3)

3630

(3322–4156)

Treatment

Chemoradiation

33

78.6

Radiation

9

21.4

Radiation dose

5400

1

2.4

5940

1

2.4

7000

39

92.9

Missing

1

2.4