Prospective: Seniors confused, skeptical about Medicare changes.
D000368:Aged; D001294:Attitude to Health; D006297:Health Services Accessibility / Q000191:economics; D006801:Humans; D007356:Insurance, Pharmaceutical Services / Q000331:legislation & jurisprudence*; D006278:Medicare / Q000331:legislation & jurisprudence*; D011639:Public Opinion; D014481:United States