Clinical feature Statistical test Significant genes Associated with                 Associated with Time to Death Cox regression test N=0 AGE Spearman correlation test N=16 older N=8 younger N=8 GENDER t test N=0 HISTOLOGICAL TYPE ANOVA test N=17 RADIATIONS RADIATION REGIMENINDICATION t test N=7 yes N=6 no N=1 RADIATIONEXPOSURE t test N=0 DISTANT METASTASIS ANOVA test N=1 EXTRATHYROIDAL EXTENSION ANOVA test N=4 LYMPH NODE METASTASIS ANOVA test N=9 COMPLETENESS OF RESECTION ANOVA test N=1 NUMBER OF LYMPH NODES Spearman correlation test N=8 higher number.of.lymph.nodes N=6 lower number.of.lymph.nodes N=2 NEOPLASM DISEASESTAGE ANOVA test N=5 MULTIFOCALITY t test N=1 unifocal N=0 multifocal N=1 TUMOR SIZE Spearman correlation test N=0