Study Search Results Your query returned 9 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. Danish 1905 Cohort Study, 1998 (ICPSR 3960) University of Southern Denmark. Institute of Public Health; Duke University 2. Longitudinal Study of Aging Danish Twins, 1995 (ICPSR 21041) Christensen, Kaare; Vaupel, James W. 3. National Health Interview Survey, 1990: Assistive Devices Supplement (ICPSR 6139) United States Department of Health and Human Services. Centers for Disease Control and Prevention. National Center for Health Statistics 7 more results in National Health Interview Survey Series 4. National Home and Hospice Care Survey, 2000 (ICPSR 3791) United States Department of Health and Human Services. National Center for Health Statistics 1 more results in National Home and Hospice Care Survey Series 5. National Medical Expenditure Survey, 1987: Household Survey Data on Home Health Care and Medical Equipment Purchases and Rentals [Public Use Tape 14.2] (ICPSR 9944) United States Department of Health and Human Services. Agency for Health Care Policy and Research 4 more results in National Medical Expenditure Survey Series 6. National Survey of Self-Care and Aging: Baseline, 1990-1991 (ICPSR 6718) DeFriese, Gordon H.; Norburn, Jean E. Kincade 7. National Survey of Self-Care and Aging: Follow-Up, 1994 (ICPSR 2592) DeFriese, Gordon H.; Norburn, Jean E. Kincade 8. Springfield [Massachusetts] Study of Populations with Disabilities, 1993-1997 (ICPSR 2623) Allen, Susan M.; Mor, Vincent 9. World Health Organization Collaborative Study on Social and Health Aspects of Aging in Bahrain, Egypt, Jordan, and Tunisia, 1991 (ICPSR 6250) Andrews, Gary R.