Data Portals

American National Election Studies On March 6, 2001, the Secretary of Commerce decided that unadjusted data from Census 2000 should be used to tabulate population counts reported to states and localities pursuant to 13 U.S.C. 141(c) (see 66 FR 14520, March 13, 2001). These numbers are not official Census 2000 counts. These numbers are estimates of the population based on a statistical adjustment method, utilizing sampling and modeling, applied to the official Census 2000 figures.

Demographic and Health Surveys DHS surveys provide data for a wide range of monitoring and impact evaluation indicators in the areas of population, health, and nutrition.

Dwaine Marvick Research Collection Dwaine Marvick, 1923-1999 was a Political Science Professor at UCLA. He conducted research projects into attitudes and activities at several levels of politics in California, West Africa, India and Germany. This portal is a record of his publications, data sets and other materials. Please contact the Data Archive for more information about datasets.

Earthquake Survey Data from UCLA Earthquake related behavior is an important part of disaster research in California. Behavior during and immediately after earthquakes is influenced by a range of socioeconomic, situational, and social psychological factors. Here you will find survey data collected as part of research at the University of California , Los Angeles about the knowledge, attitudes and behaviors of individuals in responding to earthquakes.

General Social Survey  "The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor social change within the United States and to compare the United States to other nations. The GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings." (from the GSS website) Data access is provided through the GSS website and ICPSR.  

Health and Retirement Study  "The Health and Retirement Study (HRS) is a source of longitudinal, cross-sectional data for researchers and policymakers who study aging. HRS surveys more than 22,000 Americans over the age of 50 every two years and studies the labor force participation and health transitions that individuals undergo toward the end of their work lives and in the years that follow. The study has collected information about income, work, assets, pension plans, health insurance, disability, physical health and functioning, cognitive functioning, and health care expenditures." (from the HRS website) Data access is availalbe from the HRS website and ICPSR.

IPUMS USA This is a project dedicated to collecting and distributing United States census data. The resources here allow you to make subsets of US Census data across censuses and for selections of variables or geography. "The Integrated Public Use Microdata Series (IPUMS) consists of thirty-nine high-precision samples of the American population drawn from fifteen federalcensuses and from the American Community Surveys of 2000-2006. Some of these samples have existed for years, and others were created specifically for this database. The thirty-nine samples, which draw on every surviving census from 1850-2000, and the 2000-2006 ACS samples, collectively comprise our richest source of quantitative information on long-term changes in the American population."

IPUMS International As with the IPUMS USA this project aims to make available census data from countries around the world. Census files are currently available for 35 countries.

International Social Survey Program (ISSP) The ISSP is a continuing annual program of cross-national collaboration on surveys covering topics important for social science research. GESIS Data Archive and Data Analysis, the ISSP data archive, is responsible for archiving, integrating data and documentation and for the distribution of the merged international datasets. Topics in the ISSP largely focus on Role of Government, Social Networks, Social Inequality, Family and Changing Gender Roles, Work Orientations, Religion, Environment, National Identity, Citizenship and Leisure Time and Sports. There are 45 member countries participating in the ISSP.

Life Histories and Social Change in Contemporary China, 1996 As part of the project "Life Histories and Social Change in Contemporary China," a national probability sample survey was conducted in the People's Republic of China during June-October1996. Interviews were completed for 6,090 Chinese adults, aged 20-69 (3,087 urban residents and 3,003 rural residents). As part of the fieldwork operation for the rural survey, a survey of 383 village leaders was also carried out, using the same questionnaire. The project was initiated in 1994 by Donald J. Treiman, UCLA, Ivan Szelenyi, then at UCLA and now at Yale, and Andrew Walder, then at Harvard and now at Stanford University, in cooperation with staff of the Department of Sociology, People's University, Beijing.

Lijpart Elections Archive The Lijphart Elections Archive is a static research collection of district level election results for approximately 350 national legislative elections in 26 countries that was maintained through 2003.

National Bureau of Economic Research Data Portal Provides access to a variety of data including macro level economic data, industry and international trade data, data on hospitals, vital statistics and demographic data, patents and other assorted topics. Most studies are available in a variety of statistical package formats and are ready to download. NBER also provides access to the Current Population Surveys, monthly and supplemental files

National Longitudinal Study of Adolescent Health (Add Health) "is a longitudinal study of a nationally representative sample of adolescents in grades 7-12 in the United States during the 1994-95 school year. The Add Health cohort has been followed into young adulthood with four in-home interviews, the most recent in 2008, when the sample was aged 24-32. Add Health combines longitudinal survey data on respondents’ social, economic, psychological and physical well-being with contextual data on the family, neighborhood, community, school, friendships, peer groups, and romantic relationships, providing unique opportunities to study how social environments and behaviors in adolescence are linked to health and achievement outcomes in young adulthood. The fourth wave of interviews expanded the collection of biological data in Add Health to understand the social, behavioral, and biological linkages in health trajectories as the Add Health cohort ages through adulthood." (from the Add Health website) Data access is provided by ICPSR and Sociometrics.

Pew Internet and American Life Project Pew provide our raw data to scholars for their own research. This page contains links to the Project's survey datasets that are currently available in SPSS on this site. Data is presented in two forms: as an SPSS file and as cross tabulations of questions with some basic demographics in a Word file. The site contains a search feature for identifying available data sets by topic.

Roper Center for Public Opinion Research "The Roper Center for Public Opinion Research is one of the world's leading archives of social science data, specializing in data from surveys of public opinion. The data held by the Roper Center range from the 1930s, when survey research was in its infancy, to the present. Most of the data are from the United States,but over 50 nations are represented." UCLA students, faculty and staff can search for entire polls or can search a question-level database called iPoll.

Social Stratification in Eastern Europe After 1989  "As part of the project "Social Stratification in Eastern Europe after 1989," sample surveys were conducted in 1993 and 1994 in six countries: Bulgaria, the Czech Republic, Hungary, Poland, Russia, and Slovakia. Using a questionnaire common to all countries, national probability samples of approximately 5,000 members of the adult population were surveyed in five of the six countries in 1993.