The Global Health Data Exchange (GHDx) is a catalog of global health and demographic data. The goal of the GHDx is to help people locate data by cataloging information about data including the topics covered, by providing links to data providers or explaining how to acquire the data, and in cases where we have permission, providing the data directly for download. Use the GHDx to research population census data, surveys, registries, indicators and estimates, administrative health data, and financial data related to health.
This help section of the GHDx covers both our methodology for the catalog as well as techniques you can use to find data in the GHDx. Also, here's a breakdown of the changes in the new version of the GHDx.