Clinical feature	Statistical test	Significant genes	Associated with	               	Associated with	
Time to Death	Cox regression test	N=25	shorter survival	N=18	longer survival	N=7
AGE	Spearman correlation test	N=511	older	N=505	younger	N=6
NEOPLASM DISEASESTAGE	Kruskal-Wallis test	N=391	 	 	 	 
PATHOLOGY T STAGE	Spearman correlation test	N=288	higher stage	N=115	lower stage	N=173
PATHOLOGY N STAGE	Wilcoxon test	N=1723	class1	N=1723	class0	N=0
PATHOLOGY M STAGE	Kruskal-Wallis test	N=3	 	 	 	 
GENDER	Wilcoxon test	N=33	male	N=33	female	N=0
HISTOLOGICAL TYPE	Kruskal-Wallis test	N=3138	 	 	 	 
RADIATIONS RADIATION REGIMENINDICATION	Wilcoxon test	N=9	yes	N=9	no	N=0
RADIATIONEXPOSURE	Wilcoxon test	N=0	 	 	 	 
EXTRATHYROIDAL EXTENSION	Kruskal-Wallis test	N=389	 	 	 	 
COMPLETENESS OF RESECTION	Kruskal-Wallis test	N=2	 	 	 	 
NUMBER OF LYMPH NODES	Spearman correlation test	N=1299	higher number.of.lymph.nodes	N=39	lower number.of.lymph.nodes	N=1260
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=49	 	 	 	 
ETHNICITY	Wilcoxon test	N=0