1. Brookings. What the 2020 census will reveal about America: stagnating growth, an aging population, and youthful diversity. Assessed August 28, 2021. https://www.brookings.edu/research/what-the-2020-census-will-reveal-about-america-stagnating-growth-an-aging-population-and-youthful-diversity/
2. Centers for Disease Control and Prevention. Healthy aging at a glance, 2015: helping people to live long and productive lives and enjoy a good quality of life. Assessed Nov 25, 2021. https://stacks.cdc.gov/view/cdc/43961
3. National council on aging. Get the facts on healthy aging. Assessed September 10, 2021. https://www.ncoa.org/article/get-the-facts-on-healthy-aging
4. Zayas CE, He Z, Yuan J, et al. Examining healthcare utilization patterns of elderly middle-aged adults in the United States. Proc Int Fla AI Res Soc Conf. 2016;2016:361–6.
5. Keehan SP, Cuckler GA, Poisal JA, et al. National health expenditure projections, 2019–28: expected rebound in prices drives rising spending growth. Health Aff (Millwood). 2020;39(4):704–14.