How does the MPI respond to changes over time?
The MPI can be used to study the changes in poverty patterns over time providing that the data are available from the same survey conducted at different years and MPI estimates are strictly harmonised. If estimates are not harmonized, readers are advised to carefully interpret the changes over time for a particular country because different indicators could be missing from the survey at different points in time.
Approximately 70 countries have suitable surveys that allow for the calculation of the MPI and its components over time. Estimates for previous years using the Global MPI 2018 methodology will be available at the HDRO website (http://hdr.undp.org/en/data) in due time.