Mapping and spatial analysis. The locations of the survey clusters
were mapped by using ArcGIS 10 (ESRI). Because the use of global
positioning system (GPS) handsets was considered inappropriate during
the survey field work due to security risks, it was not possible to record
precise coordinates for the locations. Instead, place names from shape
files downloaded from the Somalia Water and Land Information
Management GeoNetwork were used to manually geo-locate the cluster
start points. Shape files containing the median UICs for women and SAC
and the respective sample sizes were constructed, and the categories of
UIC visualized by using graduated color symbols. All map layers used the
World Geodetic System 1984 geographic coordinate system and were
projected by using the Universal Transverse Mercator zone 38N before
spatial analysis