title: Methodological biases in estimating the burden of out-of-pocket expenses.
authors.affiliation: RAND, Santa Monica, CA 90407-2138, USA.
authors.forename: D P
authors.initials: DP
authors.lastname: Goldman
authors.forename: J P
authors.initials: JP
authors.lastname: Smith
mesh_terms: D000368:Aged; D015982:Bias; D017281:Cost of Illness; D005853:Geriatrics / Q000191:economics*; D006801:Humans; D007182:Income; D012943:Social Security; D014481:United States