Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
SOIL reports the predominant soil type within a 5-kilometer circular buffer around each DHS cluster location. The soil attributes reported in SOIL are: soil class (e.g., Leptosols), with 30 class categories, and soil type within that class (e.g., Lithic Leptosols). SOIL is available for every IPUMS-DHS sample with GPS data.
SOIL is based on data from SoilGrids [URL omitted from DDI.]. SoilGrids is a system for automated soil mapping based on global soil profile and covariate data. There are 118 different soil types in the world according to SoilGrids [URL omitted from DDI.]. For the full list of codes and their meaning, see the soil legend [URL omitted from DDI.].
SOIL, like the other IPUMS-DHS contextual variables, is calculated and based on sources external to DHS data. For more information on IPUMS-DHS contextual variables and how they are constructed, refer to the documentation [URL omitted from DDI.] on these variables.