Liquidity, Activity, Mortality
---- Acknowledgements -----
We wish to thank Hoyt Bleakley, Kerwin Charles, Craig Garthwaite, David Segal, Jon Skinner, and Mel Stephens for a number of helpful suggestions, and also seminar participants at Dartmouth College, the Federal Reserve Board at St. Louis, Harvard University, Indiana University, University of Chicago, University of California - Santa Barbara, and the University of Maryland - College Park for useful feedback. Thanks to Robert Bilgrad and Karen Davis of the NCHS and Robert Stedman of the Washington Metropolitan Area Transit Authority for help accessing and using restricted data. Andrew Kenny, Ron Mariutto and Corey McNeilly provided excellent research assistance throughout this project. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.