Clinical feature	Statistical test	Significant variables	Associated with	               	Associated with	
Time to Death	Cox regression test	N=2	shorter survival	N=2	longer survival	N=0
AGE	Spearman correlation test	N=2	older	N=2	younger	N=0
AGE_mutation rate	Linear Regression Analysis	N=2	 	 	 	 
NEOPLASM DISEASESTAGE	Kruskal-Wallis test	N=2	 	 	 	 
PATHOLOGY T STAGE	Spearman correlation test	N=2	higher stage	N=2	lower stage	N=0
PATHOLOGY N STAGE	Wilcoxon test	N=0	 	 	 	 
PATHOLOGY M STAGE	Kruskal-Wallis test	N=0	 	 	 	 
GENDER	Wilcoxon test	N=0	 	 	 	 
HISTOLOGICAL TYPE	Kruskal-Wallis test	N=1	 	 	 	 
RADIATIONS RADIATION REGIMENINDICATION	Wilcoxon test	N=0	 	 	 	 
RADIATIONEXPOSURE	Wilcoxon test	N=0	 	 	 	 
EXTRATHYROIDAL EXTENSION	Kruskal-Wallis test	N=2	 	 	 	 
COMPLETENESS OF RESECTION	Kruskal-Wallis test	N=2	 	 	 	 
NUMBER OF LYMPH NODES	Spearman correlation test	N=0	 	 	 	 
MULTIFOCALITY	Wilcoxon test	N=0	 	 	 	 
TUMOR SIZE	Spearman correlation test	N=1	higher tumor.size	N=1	lower tumor.size	N=0
RACE	Kruskal-Wallis test	N=1	 	 	 	 
ETHNICITY	Wilcoxon test	N=0