NBER Retirement Research Center Paper No. NB 08-04
Issued in December 2008
---- Acknowledgements -----
This research was supported by the U.S. Social Security Administration through grant #10-P-98363-1-05 to the National Bureau of Economic Research as part of the SSA Retirement Research Consortium, and by the National Institute on Aging and the Robert Wood Johnson Foundation. We are grateful to Elliott Fisher and John E. Wennberg for very helpful comments and suggestions. The findings and conclusions expressed are solely those of the author(s) and do not represent the views of SSA, any agency of the Federal Government, or the NBER.