


Tian Gao worked on this project as a graduate student at the University of Michigan. Laura Zhao worked on this project as a graduate student and then subsequently as a post doc at the University of Maryland. Sloan Foundation and the additional support of the Michigan Institute for Data Science and the Michigan Institute for Teaching and Research in Economics.

We acknowledge financial support of the Alfred P. Transportation Economics in the 21st Century.Training Program in Aging and Health Economics.The Roybal Center for Behavior Change in Health.Retirement and Disability Research Center.Measuring the Clinical and Economic Outcomes Associated with Delivery Systems.Improving Health Outcomes for an Aging Population.Early Indicators of Later Work Levels, Disease and Death.Conference on Research in Income and Wealth.Boosting Grant Applications from Faculty at MSIs.Productivity, Innovation, and Entrepreneurship.International Finance and Macroeconomics.
