title: Polls and policy: signals or substance.
authors.affiliation: Duke University Medical Center, Durham, NC.
authors.forename: Lynn J
authors.initials: LJ
authors.lastname: Howie
authors.affiliation: Massachusetts General Hospital, Boston, MA jpeppercorn@partners.org.
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Peppercorn
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D006278:Medicare / Q000191:economics*; D010820:Physicians / Q000191:economics*; D011639:Public Opinion