Table 2.

Cox regression analyses of the various factors associated with PFS and OS in NPC patients

Variables	progression-free survival			overall survival
	HR	95% CI	P	HR	95% CI	P
Gender (Female/Male)	0.546	0.248-1.200	0.132	0.492	0.221-1.096	0.083
Age(≤48/>48)	0.710	0.380-1.327	0.283	0.595	0.316-1.120	0.108
Stage(I+II/III+IV)	2.430	0.810-7.289	0.113	2.466	0.868-7.003	0.090
Metastasis No metastasis	0.529	0.169-1.655	0.274	0.476	0.162-1.400	0.178
CALR(High/Low)	2.564	1.217-5.405	0.013	3.179	1.464-6.902	0.003

HR, hazard ratio; 95% CI, 95% confidence interval