Table 1.
Data sources and properties of the predictors explored to model soil-transmitted helminth infection risk in Brazil
| Data type | Source | Temporal resolution | Spatial resolution |
|---|---|---|---|
| Temperature and precipitationa | WorldClimb | 1950-2000 | 1 km |
| Altitude | SRTMc | 2000 | 1 km |
| Soil acidity/soil moisture | ISRIC-WISEd | 1960-2000 | 10 km |
| Human influence index (HII) | LTWe | 2005 | 1 km |
| Human development index (HDI) | Atlas Brasil 2013f | 2000 and 2010 | Municipality |
| Poor households | Atlas Brasil 2013f | 2000 and 2010 | Municipality |
| Rurality, improved water supply, sewage system and waste treatment | Ministério da Saúdeg | 2010 | Municipality |
| Population density | GPWFEh | 2010 | 10 km |
aA total of 19 climatic variables related to various factors were considered.
bWorldClim Global Climate database version 1.4; available at: http://www.worldclim.org/ (accessed: March 2012).
cShuttle Radar Topography Mission (SRTM); available at: http://www.worldclim.org/ (accessed: March 2012).
dGlobal soil profile data ISRIC-WISE database version 1.2; available at: http://www.isric.org/ (accessed: December 2012).
eLast of the Wild Data version 2, 2005 (LTW-2): Global Human Footprint Dataset (Geographic). Wildlife Conservation (WCS) and Center for International Earth Science Information Network (CIESIN); available at: http://www.ciesin.org/wildareas/ (accessed: December 2013).
fAtlas do Desenvolvimento Humano no Brasil 2013; available at: http://atlasbrasil.org.br/ (accessed: December 2013).
gMinistério da Saúde, Brazil; available at: http://www2.datasus.gov.br/DATASUS/index.php (accessed: December 2013).
hGridded population of the world: future estimates (GPWFE): Center for International Earth Science Information Network (CIESIN), UN Food and Agriculture Organization (FAO) and Centro Internacional de Agricultura Tropical (CIAT); available at: http://sedac.ciesin.columbia.edu/gpw (accessed: December, 2012).