Clinical feature	Statistical test	Significant variables	Associated with	               	Associated with	
DAYS_TO_DEATH_OR_LAST_FUP	Cox regression test	N=1	 	N=NA	 	N=NA
YEARS_TO_BIRTH	Spearman correlation test	N=3	older	N=3	younger	N=0
PATHOLOGIC_STAGE	Kruskal-Wallis test	N=0	 	 	 	 
PATHOLOGY_T_STAGE	Spearman correlation test	N=2	higher stage	N=2	lower stage	N=0
PATHOLOGY_N_STAGE	Spearman correlation test	N=0	 	 	 	 
PATHOLOGY_M_STAGE	Wilcoxon test	N=0	 	 	 	 
GENDER	Wilcoxon test	N=3	male	N=3	female	N=0
RADIATION_THERAPY	Wilcoxon test	N=0	 	 	 	 
HISTOLOGICAL_TYPE	Kruskal-Wallis test	N=0	 	 	 	 
NUMBER_PACK_YEARS_SMOKED	Spearman correlation test	N=0	 	 	 	 
YEAR_OF_TOBACCO_SMOKING_ONSET	Spearman correlation test	N=1	higher year_of_tobacco_smoking_onset	N=0	lower year_of_tobacco_smoking_onset	N=1
NUMBER_OF_LYMPH_NODES	Spearman correlation test	N=1	higher number_of_lymph_nodes	N=1	lower number_of_lymph_nodes	N=0
RACE	Kruskal-Wallis test	N=0	 	 	 	 
ETHNICITY	Wilcoxon test	N=0