Study Search Results Your query returned 3 results. Series results are grouped under the most relevant study. You can ungroup series results. Results per page: 25 50 100 Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Most Downloaded (?) Study Title/Investigator 1. Aging in the Eighties: America in Transition, 1981 (ICPSR 8691) National Council on the Aging 2. American Perceptions of Aging in the 21st Century [APA21], 2000 (ICPSR 3326) Cutler, Neal E.; Whitelaw, Nancy A. 3. National Long-Term Care Survey: 1982, 1984, 1989, 1994, 1999, and 2004 (ICPSR 9681) Manton, Kenneth G.