Table 2. Univariate Cox regression analysis of overall survival in papillary thyroid cancer patients.

Characteristics	HR	95% CI-l	95% CI-u	P-value
Age	1.160	1.101	1.222	<0.001
Gender	2.005	0.725	5.543	0.180
Cancer status	30.615	2.775	337.813	0.005
Stage 2	6.137	0.864	43.582	0.070
Stage 3	10.050	2.085	48.441	0.004
Stage 4	20.622	3.951	107.644	<0.001
F12	4.894	2.346	10.208	<0.001

Abbreviations: HR, hazard ratio; 95% CI-l, 95% confidence interval-lower; 95% CI-u, 95% confidence interval-upper.