Table 5.

Patient characteristics of the two-group model

	Symptom burden
Group	Low (n = 42)		High (n = 88)		P*
	n	%	n	%
Treatment
Radiotherapy**	23	56.10	29	33.72	.017
Chemoradiotherapy**	18	43.90	57	66.28
Age
< 60 years	26	61.90	35	39.77	.018
≥ 60 years	16	38.10	53	60.23
Sex
Women	13	30.95	19	21.59	.247
Men	29	69.05	69	78.41
Tumor stage
0/I/II	32	86.49	52	62.65	.009
III/IV	5	13.51	31	37.35
Cancer site
Pharynx	20	48.78	42	47.73	.894
Tongue	1	2.44	22	25.00	.002
ECOG PS
0	36	92.31	52	60.47	.0003
≥ 1	3	7.69	34	39.53
Total radiation dose
≤ 60 Gy	30	71.43	51	58.62	.159
> 60 Gy	12	28.57	36	41.38

^*Chi square test