Table 1 Patient characteristics

Age

mean (years) ± SD

54.14 ± 13.89

58.29 ± 14.75

Range

36–75

22–85

Gender, n (%)

Male

23 (65.71%)

22 (62.86%)

Female

12 (34.29%)

13 (37.14%)

Primary cancer site, n (%)

Nasopharynx

25 (71.42%)

11 (31.43%)

Oral cavity

7 (20%)

12 (34.29%)

Salivary gland

1 (2.86%)

3 (8.57%)

Nasal cavity and paranasal sinus

1 (2.86%)

4 (11.43%)

Larynx

1 (2.86%)

4 (11.43%)

Thyroid

0 (0%)

1 (2.86%)

Stage of cancer, n (%)

Stage I

1 (2.86%)

1 (2.86%)

Stage II

3 (8.57%)

7 (20%)

Stage III

17 (48.57%)

13 (37.14%)

Stage IV

14 (40%)

14 (40%)

Radiation technique, n (%)

IMRT/VMAT^a

33 (94.29%)

32 (91.43%)

3D CRT^b

2 (5.71%)

3 (8.57%)

Duration after radiation (months)

Mean ± SD

7.06 ± 3.86^c

4.71 ± 3.41

Range

1–12

1–11

Concomitant chemotherapy, n (%)

32 (91.42%)^d

23 (65.71%)