b'21McWilliams JM, Zaslavsky AM, Meara E, Ayanian JZ . Impact of Medicare coverage on basic clinical services for previously uninsured adults . Journal of the American Medical Association . 2003;290(6):757-764 .22McWilliams JM, Meara E, Zaslavsky AM, Ayanian JZ . Use of health services by previously uninsured Medicare beneficiaries . New England Journal of Medicine . 2007;357(2):143-153 .23Fong TG, Jones RN, Rudolph JL, et al . Development and validation of a brief cognitive assessment tool: The sweet 16 . Archives of Internal Medicine . 2011;171(5):432-437 .24Diebold J . The effects of Medicare Part D on health outcomes of newly covered Medicare beneficiaries . The Journals of Gerontology: Series B . 2018;73(5):890-900 .25Tipirneni R, Ganguli I, Ayanian JZ, Langa KM . Reducing disparities in healthy aging through an enhanced Medicare Annual Wellness Visit . Public Policy and Aging Report . 2019;29(1):26-32 .26Nam S, Han SH, Gilligan M . Internet use and preventive health behaviors among couples in later life: Evidence from the Health and Retirement Study . Gerontologist . 2019;59(1):69-77 .27Bavishi A, Slade MD, Levy BR . A chapter a day: Association of book reading with longevity . Social Science and Medicine . 2016;164:44-48 .28Curl AL, Bibbo J, Johnson RA . Dog walking, the human-animal bond and older adults physical health . Gerontologist . 2017;57(5):930-939 .29Coile CC . Working longer in the United States: Trends and explanations, In Social Security Programs and Retirement around the World: Working Longer, (Eds .) Coile, Milligan, and Wise . University of Chicago Press, 2019 .30Goldin C, Mitchell J . The new life cycle of womens employment: Disappearing humps, sagging middles, expanding tops . Journal of Economic Perspectives . 2017;31(1):161-182 .31Lusardi A, Mitchell OS . Older womens labor market attachment, retirement planning, and household debt . Cambridge, MA: National Bureau of Economic Research; 2016:1-38 . 32HRS, 2018 .33Angrisani M, Casanova M, Meijer E . Work-life balance and labor force attachment at older ages . Journal of Labor Research . 2020;41(1-2):34-68 .34Maestas N . Back to work: Expectations and realizations of work after retirement . Journal of Human Resources 2010;45(3):718-748 .35Sanzenbacher G, Gillis CM, Sass SA . How job changes affect retirement timing by socioeconomic status . Issue in Brief 17-3 . Center for Retirement Research at Boston College . 2017 .36Ramnath S, Shoven JB, Slavov N . Pathways to retirement through self-employment . Journal of Pension Economics and Finance . 2020, online ahead of print .37Voss MW, Wadsworth L, et al . Health effects of late-career unemployment . Journal of Aging and Health . 2020;32(1):106-116 .38Yang J . Formal volunteering buffers the negative impact of unemployment among older workers: A longitudinal analysis . Journal of Gerontological Social Work . 2020;63(4);1-20 .39Staudinger UM, Yu YL, Cheng B . Novel information processing at work across time is associated with cognitive change in later life: A 14-year longitudinal study . Psychology and Aging . 2020;35(6):793805 .40Rohwedder S, Willis RJ . Mental retirement . Journal of Economic Perspectives . 2010;24(1):119-138 .41Lee Y, Palinkas LA . Retirement, leisure activity engagement, and cognition among older adults in the United States . Journal of Aging and Health . 2019;31(7):1212-1234 .42Insler M . The health consequences of retirement . Journal of Human Resources . 2014;49(1):195-233 .43Carr DC, Moen PM, Jenkins P, Smyer M . Postretirement life satisfaction and financial vulnerability: The moderating role of control . The Journals of Gerontology: Series B . 2020;75(4):849-860 .44Fonseca R, Kapetyn A, Lee J, Zamarro G . Does retirement make you happy? A simultaneous equations approach . University of Michigan Retirement Research Center . 2014; Working Paper 2014-310 .30'