Information needs and preferences of the general Medicare population.
D000368:Aged; D014487:Centers for Medicare and Medicaid Services, U.S.; D003142:Communication; D003256:Community Participation; D003258:Consumer Behavior; D006801:Humans; D007255:Information Services; D006278:Medicare / Q000458:organization & administration*; D020380:Needs Assessment; D014481:United States