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Primary data, fulltext for approximately 250,000 individual questions and aggregated responses, often cross tabulated by respondent characteristics, compiled from public opinion surveys. Topics cover social, health, economic, and political issues at local, state, national, and international levels.
The Demographic and Health Surveys (DHS) program of the U.S. Agency for International Development (USAID) "has collected, analyzed, and disseminated accurate and representative data on population, health, HIV, and nutrition through more than 260 surveys in over 90 countries."