Clinical feature Statistical test Significant genes Associated with                 Associated with DAYS_TO_DEATH_OR_LAST_FUP Cox regression test N=9 shorter survival N=3 longer survival N=6 YEARS_TO_BIRTH Spearman correlation test N=30 older N=16 younger N=14 NEOPLASM_DISEASESTAGE Kruskal-Wallis test N=30 PATHOLOGY_T_STAGE Spearman correlation test N=30 higher stage N=14 lower stage N=16 PATHOLOGY_N_STAGE Wilcoxon test N=30 n1 N=30 n0 N=0 PATHOLOGY_M_STAGE Wilcoxon test N=0 GENDER Wilcoxon test N=0 HISTOLOGICAL_TYPE Kruskal-Wallis test N=30 RADIATIONS_RADIATION_REGIMENINDICATION Wilcoxon test N=30 yes N=30 no N=0 RADIATION_EXPOSURE Wilcoxon test N=0 EXTRATHYROIDAL_EXTENSION Kruskal-Wallis test N=30 COMPLETENESS_OF_RESECTION Kruskal-Wallis test N=0 NUMBER_OF_LYMPH_NODES Spearman correlation test N=30 higher number_of_lymph_nodes N=18 lower number_of_lymph_nodes N=12 MULTIFOCALITY Wilcoxon test N=13 unifocal N=13 multifocal N=0 TUMOR_SIZE Spearman correlation test N=2 higher tumor_size N=0 lower tumor_size N=2 RACE Kruskal-Wallis test N=4 ETHNICITY Wilcoxon test N=0