Pathways to Disability: Predicting Health Trajectories

Florian Heiss, Axel Börsch-Supan, Michael Hurd, and David A. Wise, Health at Older Ages: The Causes and Consequences of Declining Disability among the Elderly (University of Chicago Press, 2009), chap. 4, https://www.nber.org/books-and-chapters/health-older-ages-causes-and-consequences-declining-disability-among-elderly/pathways-disability-predicting-health-trajectories.