| http://www.w3.org/ns/prov#value | - DESIGN: Black patients with colon cancer were matched with 3 groups of white patients: a demographic characteristics" match controlling for age, sex, diagnosis year, and Survey, Epidemiology, and End Results (SEER) site; a presentation match controlling for demographic characteristics plus comorbid conditions and tumor characteristics, including stage and grade; and a treatment match, includi
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