Managed care health insurers in the US restrict their enrollees' choice of hospitals to within specific networks. This paper considers the implications of these restrictions. A three-step econometric model is used to predict consumer preferences over health plans conditional on the hospitals...

Financing retirement -- Were they prepared for retirement? : financial status at advanced ages in the HRS and AHEAD cohorts / James M. Poterba, Steven F. Venti, and David A. Wise ; comment, David Laibson -- Economic preparation for retirement / Michael D. Hurd and Susann Rohwedder ; comment,...

We study the effect of physician incentives in an HMO network. Physician incentives are controversial because they may induce doctors to make treatment decisions that differ from those they would chose in the absence of incentives. We set out a theoretical framework for assessing the degree to...