Table 3.

Univariate and multivariate COX regression models for predicting progression-free survival

	Univariate analysis		Multivariate analysis
	HR (95% CI)	P	HR (95% CI)	P
Gender, male	/ (/–/)	0.385
Tumor subsite
Oropharynx	1 (Reference)
Hypopharynx	1.24 (0.56–2.74)	0.601
Neoadjuvant cycle
3	1 (Reference)
Others	0.91(0.44–1.91)	0.810
Best overall response
ORR	1 (Reference)
Stable disease + progressive disease	1.58 (0.75–3.30)	0.226
T stage change
Down	1 (Reference)		1 (Reference)
Same	2.29 (1.07–4.92)	0.033	1.50 (0.63–3.58)	0.364
N-stage change
Down	1 (Reference)		1 (Reference)
Same	2.70 (1.04–7.02)	0.042	1.15(0.22–6.10)	0.874
AJCC-stage change
Down	1 (Reference)		1 (Reference)
Same	3.15 (1.22–8.16)	0.018	3.15 (1.22–8.16)	0.018

ORR objective response rate