Ketcham, Jonathan D.; Lucarelli, Claudio; Powers, … - In: American Economic Review 105 (2015) 1, pp. 204-33
We study whether people became less likely to switch Medicare prescription drug plans (PDPs) due to more options and more time in Part D. Panel data for a random 20 percent sample of enrollees from 2006-2010 show that 50 percent were not in their original PDPs by 2010. Individuals switched PDPs...