Characteristics of the Input Geospatial Datasets, by Data Layer, for Modeling Travel Time and Estimating Accessibility Coverage Among Women Needing Delivery Care in Kigoma Region, Tanzania

Data Layer
Land CoveraRiver NetworkRoad NetworkbDigital Elevation ModelBirth Density MapcHealth Facility Coordinates
Data formatRasterShapefileShapefileRasterRasterShapefile
SourceRegional Centre for Mapping of Resources for Development, NASA SERVIR Global21OpenStreetMapOpenStreetMapShuttle Radar Topography Mission22WorldPop29CDC Kigoma Health Facility Assessment16
Spatial resolution30 meterN/AN/A30 meter100 meterN/A
PurposeProvide non-road land feature class (i.e., forestland, grassland, cropland, settlement, wetland)Provide a layer of physical barrier in addition to wetlandProvide road land feature class (i.e., major roads, major roads crossing residential areas, secondary roads, local roads)Provide elevation/slope landscape used for travel speed adjustment for walkingProvide estimated distribution count of live births for a specified travel time catchmentProvide locations of assessed coordinates in the analysis
  • a The 2010 Tanzania land cover scheme I was used to specify non-road land classes.

  • b Roads are reclassified to reflect the classification scheme used by John Snow, Inc. and Medical Supply Department in the cross-country medical supply route analysis in 2014.18

  • c The layer was created using the mapping methodology described by Tatem et al. (2014).46