Study Search Results Your query returned 5 results. Series results are grouped under the most relevant study. You can ungroup series results. Use the search box below to revise your search, or start a new search. 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. Chitwan Valley [Nepal] Family Study: Changing Social Contexts and Family Formation (ICPSR 4538) Axinn, William G.; Thornton, Arland; Barber, Jennifer S.; et al. 2. Health Interview Survey, 1963 (ICPSR 28381) United States Department of Health and Human Services. Centers for Disease Control and Prevention. National Center for Health Statistics 1 more results in National Health Interview Survey Series 3. National Longitudinal Study of Adolescent Health (Add Health), 1994-2008 (ICPSR 21600) Harris, Kathleen Mullan; Udry, J. Richard 4. National Survey of America's Families (NSAF), 1997 (ICPSR 4581) Urban Institute; Child Trends 1 more results in National Survey of America's Families (NSAF) Series 5. National Survey of Families and Households: Wave I, 1987-1988, and Wave II, 1992-1994 (ICPSR 6906) Bumpass, Larry L.; Sweet, James A.