 The percentage who reported skipping other basic necessities to pay for drugs also dropped, from 10.6% in 2004 and 11.1% in 2005 to 7.6% in 2006.The very sickest beneficiaries reported no reduction, but fewer reported forgoing other necessities to pay for medicine.A parallel study found that Part D beneficiaries skip doses or switch to cheaper drugs and that many do not understand the program.