Study Search Results Your query returned 6 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. ACTIVE (Advanced Cognitive Training for Independent and Vital Elderly), 1999-2001 [United States] (ICPSR 4248) Tennstedt, Sharon; Morris, John; Unverzagt, Frederick; et al. 2. Aging of Veterans of the Union Army: Military, Pension, and Medical Records, 1820-1940 (ICPSR 6837) Fogel, Robert W., et al. 1 more results in Civil War Veterans Series 3. Census of Population and Housing, 1990 [United States]: Public Use Microdata Sample: 3-Percent Elderly Sample (ICPSR 6219) United States Department of Commerce. Bureau of the Census 1 more results in Census of Population and Housing, 1990 [United States] Series 4. County-Level Estimates of the Population Aged Sixty Years and Over by Age, Sex, and Race, 1977-1980 (ICPSR 7955) Inter-university Consortium for Political and Social Research 5. Detroit Area Study, 1993: Health and Aging (ICPSR 2839) Rodgers, Willard 6. Home Heating Costs of the Rural Elderly in Michigan, 1980 (ICPSR 9051) Douglass, Richard L.