Table 2.

Summary of patient and disease characteristics.

	N. (%)
Age at Diagnosis, Median (Range)	69 years (39–95)
Sex Male Female	36 (64%) 20 (36%)
ECOG Performance status 0 1	15 (27%) 41 (73%)
Smoking Yes Ex-smoker No	22 (39%) 5 (9%) 29 (52%)
Primary tumor site Oral cavity Larynx Nasopharynx Oropharynx Hypopharynx Salivary glands Thyroid Paranasal sinus Unknown primary	14 (25%) 8 (14%) 2 (4%) 17 (30%) 5 (9%) 6 (11%) 2 (4%) 1 (2%) 1 (2%)
Histology Squamous cell carcinoma Other histologies	44 (79%) 12 (21%)
Radiotherapy aim Radical radiotherapy Adjuvant radiotherapy	35 (62.5%) 21 (37.5%)
Concomitant systemic therapy Yes No	36 (%) 20 (35%)