TP53 and neoplasm: Comparing the patients with HI information (n  =  173) versus those without this information (n  =  75), there was no difference with respect to self-reported race/ethnicity (P  =  0.78), tumor ER status (P  =  1.0), node status (P  =  0.77), or body mass index (P  =  0.74), but patients with missing income information tended to be older (57.7 versus 54.0 mean age; P  =  0.05) and their tumors tended to have a higher grade (58% versus 46%; P  =  0.14) and a higher p53 mutation frequency (26.7% versus 16.2%; P  =  0.08).