The TRAMIL program has involved application of ethnopharmacological surveys to gather data on the
medicinal plants used for primary care in 55 locations the Caribbean Basin. Three Afrocaribbean, three Amerindian
and three Mestizo communities were selected taking in account the Ethnic prevalence. Differences in native and
exotic plant used by groups and between groups were done using contingency tables. Identification of differences in
the numbers of native and exotic plants used within each group was done with a one sample Z -test for proportions.
Similarity in medicinal species use was estimated using the Sørensen Similarity Index. Species use value (UV) was
estimated and a principal components analysis (PCA) run to determine differences between groups.