Table 1.

Environmental variables and data sources

Variable	Unit	Resolution	Time period	Source
Elevation	Meters above sea level	250 m		CGIAR Consortium for Spatial Information (CGIAR-CSI) [32]
Wealth index score		250 m	2016	Demographic and Health Surveys (DHS) [34]
Silt	g/100 g	250 m	2008–2012	International Soil Reference and Information Centre (ISRIC) [36]
Sand	g/100 g	250 m	2008–2012	International Soil Reference and Information Centre (ISRIC) [36]
Clay	g/100 g	250 m	2008–2012	International Soil Reference and Information Centre (ISRIC) [36]
NDVI		1 km	1999–2017	Copernicus Global Land Service[33]
Mean temperature	Degree Celsius	1 km	1970–2000	WorldClim[29]
Annual precipitation	mm	1 km	1970–2000	WorldClim [29]
Max temperature	Degree Celsius	250 m	1961–2005	Gebrechorkos SH et al. [30]
Min temperature	Degree Celsius	250 m	1961–2005	Gebrechorkos SH et al. [30]
Mean precipitation	mm	250 m	1961–2005	Gebrechorkos SH et al. [30]

NDVI Normalized difference vegetation index