Table 3. Multivariate analysis of RFS in classical PTC patients.

Parameters	Multivariate analysis
	p	HR	95%CI (lower/upper)
Clinical stage
I/II (N = 235)		1.000
III/IV (N = 110)	0.030	2.524	1.091	5.837
Residual tumors
No (N = 261)		1.000
Yes (N = 43)	0.018	3.133	1.219	8.054
EMX2OS expression
Low (N = 134)		1.000
High (N = 211)	0.001	0.239	0.100	0.569