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Table 2  Explanatory variable data sources

From: An ecological study of chronic kidney disease in five Mesoamerican countries: associations with crop and heat

Variable Spatial domain Temporal domain Data source
Population density All countries 2010 WorldPop [26]
Ambient temperature All countries 1970–2010 Worldclim [27, 28]
Crop cultivation Mexico 2009–2012 Mexican government productivity data [29]
Guatemala 2010 Guatemalan government land use map [30]
2011–2013 Rice productivity [22]
El Salvador 2007–2008 Agricultural Census [6]
Nicaragua 2016 Sugarcane only: Land use map [31]
2011 Agricultural census [32]
Costa Rica 2014 Agricultural census [33] and land use maps [34] for sugarcane