RT Journal A1 Mitka M T1 MEdicare (dis)advantage? JF JAMA JO JAMA YR 2009 FD February 11 VO 301 IS 6 SP 590 OP 590 DO 10.1001/jama.2009.86 UL http://dx.doi.org/10.1001/jama.2009.86 AB The December 15 report (http://www.gao.gov/new.items/d0925.pdf) said some PFFS plans charged cost-sharing fees that could be substantial and designed elaborate prenotification hurdles, leaving beneficiaries with higher costs than they would expect. Perhaps not surprisingly, from January through April 2007, about 21% of beneficiaries disenrolled from the PFFS plans; disenrollment ran about 9% for other Medicare Advantage plans.