Table 1. Clinical characteristics of enrolled papillary thyroid cancer patients.

	NO.	OS		DFS
		Hazard rations (95%CI)	P value	Hazard rations (95%CI)	P value
Age
≥60	92	55.284 (7.253–421.414)	0	2.215(1.132–4.336)	0.02*
<60	297
Gender
Male	107	2.018(0.715–5.698)	0.185	1.285(0.648–2.547)	0.473
Female	282
TNM stage
Stage I-II	249	9.32(2.621–33.139)	0.001*	2.459(1.298–4.658)	0.006*
Stage III-IV	139
NA	1
Tumor stage
T1-2	231	3.607(1.147–11.344)	0.028*	2.082(1.093–3.967)	0.026*
T3-4	156
NA	2
Lymph node metastasis
N0	159	1.113(0.363–3.41)	0.852	1.824(0.897–3.708)	0.097
N1	204
NA	26
Distant metastasis
M0	245	8.771(1.846–41.686)	0.006*	3.585(0.472–27.246)	0.217
M1	3
NA	141
Tumor status
Tumor free	309	33.189(6.866–160.444)	0	8.287(4.32–15.895)	0
With tumor	44
NA	36

NA, not available; CI, confidence interval; *, P<0.05.