Disease clusters in structured environments.

This paper discusses the distributions of several cluster statistics and illustrates their utility in the analysis of disease incidence or prevalence data arising in organized or structured environments. Such environments involve primary inhabitant locations in office buildings, manufacturing plants, apartment complexes and communities of homes, for example. The methods, which include some generalizations of some existing methods as well as some new ones, will be used to test for household clustering of Trypanosoma cruzi seropositivity data.