Too few older US adults screened for colon cancer.
D003110:Colonic Neoplasms / Q000517:prevention & control*; D003113:Colonoscopy / Q000706:statistics & numerical data*; D005260:Female; D019983:Guideline Adherence / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008875:Middle Aged; D012812:Sigmoidoscopy / Q000706:statistics & numerical data