We use many different sources to populate the information in the GHDx. Most information about datasets and series comes from the data providers; we also use many of the resources noted on the Data Sites We Love page. We are particularly indebted to organizations such as IPUMS, ICPSR, and the World Bank, which not only provide data, but provide extensive documentation about data. For older data, WorldCat is an invaluable resource.
For the information we provide about countries and organizations, we use the following sources:
- Population figures are estimated based on World Population Prospects: 2015 Revision, from the United Nations Population Division, and the WHO Human Mortality Database.
- Country start and end dates, notes, and sovereignty come from the CIA World Factbook.
- Organization start and end dates and acronyms generally come from the organization's website, as do the city and country of their location.