TABLE 1.

Patient Characteristics

Characteristic	Variable	Data	%
Total patients		54	100
Sex	Male	45	83.3
	Female	9	16.7
Age
Mean		67.1
Range		48–84
PS	0	51	94.4
	1	3	5.6
Smoking	Never smokers	8	14.8
	Former smokers	24	44.4
	Current smokers	22	40.7
	Pack years
	Mean	36.7
	Range	0–150
Primary site	Oral cavity	3	5.6
	Rhinopharynx	2	3.7
	Oropharynx	33	61.1
	Hypopharynx	8	14.8
	Larynx	8	14.8
P16 (oropharynx)	p16-positive	26	78.7
	p16-negative	7	21.2
EBV-positive		1	1.9
Stage^*	I	12	22.2
	II	20	37.0
	III	9	16.7
	IV	13	24.1
T classification	T1	4	7.4
	T2	26	48.1
	T3	13	24.1
	T4	11	20.4
N classification	N0	21	38.9
	N1	14	25.9
	N2	19	35.2
Chemotherapy	No cisplatin	25	46.3
	Cisplatin	29	53.7
Nimorazole	No	5	9.3
	Yes	49	90.7

↵* According to Union for International Cancer Control classification, eighth edition.
PS = performance status; EBV = Epstein–Barr virus.
Qualitative data are number and percentage; continuous data are mean and range.