Data watch. An expensive grandfather clause.
D000368:Aged; D000369:Aged, 80 and over; D017028:Caregivers / Q000600:supply & distribution; D017281:Cost of Illness; D006701:Home Nursing / Q000191:economics* / Q000706:statistics & numerical data; D006801:Humans; D008875:Middle Aged; D014481:United States