1. Cubanski J, Neuman T, Damico A, Smith K. Medicare beneficiaries’ out-of-pocket health care spending as a share of income now and projections for the future. The Henry J. Kaiser Family Foundation. 2018.
2. Chapter 5: Increasing participation in the Medicare savings programs and the low-income drug subsidy. Report to the Congress: Medicare Payment Policy. Washington, DC: Medicare Payment Advisory Commission; 2008:307-28.
3. Summer L, Hoadley J, Hargrave E. The Medicare Part D low-income subsidy program: experience to date and policy issues for consideration: Henry J. Kaiser Family Foundation; 2010.
4. Pezzin LE, Kasper JD. Medicaid enrollment among elderly medicare beneficiaries: individual determinants, effects of state policy, and impact on service use. Health Serv Res 2002;37(4):827-47.
5. MACPAC. Medicare Savings Programs: New Estimates Continue to Show Many Eligible Individuals Not Enrolled. Washington, DC: Medicaid and CHIP Payment Advisory Commission; 2017.