Cluster and CART analysis of patient characteristics involved in diarrheal outbreaks in Chobe District, Botswana (2011 – 2012). A - Dendrogram of cluster analysis of questionnaire data collected from patients (blue ≥5 years old, and red <5 years old) presenting to health facilities in Chobe District (2011–2012) during diarrheal outbreaks. The dendrogram was constructed using Gower Dissimilarity linkage method and Average Distance metric. With the exception of patient 38, <5 years olds clustered separately from adults and ≥5 - 14 year olds (n = 3). B – Decision tree from the CART analysis of cluster assignments.