Table 5.

Univariate analysis and Cox model for progression-free survival (PFS) and overall survival (OS).

Variables	PFS			OS
	Univariate	Cox model		Univariate	Cox model
	p-Value	p-Value	HR [95% CI]	p-Value	p-Value	HR [95%CI]
Age	0.367			0.631
Sex	0.167			0.432
ECOG	0.641			0.048
Smoker	0.222			0.254
Tumor site	0.107			0.189
p16	0.049	0.023	0.82 [0.67–0.98]	0.667
Total SUVmax	0.001	0.014	2.76 [1.25–5.89]	0.071
Total MTV	0.057			0.017	0.018	3.86 [1.35–7.88]
CPS				0.099
<1
1–20		0.087	0.88 [0.42–1.05]
≥20	0.002	0.004	0.68 [0.37–0.83]
Chemotherapy	0.035	0.034	0.86 [0.67–0.99]	0.032	0.077	0.98 [0.46–1.28]

ECOG, Eastern Cooperative Oncology Group score; Total SUVmax, total max standard uptake value; Total MTV, total metabolic tumor volume; CPS, combined positive score.