Spatial and differential income pattern of households of adolescents and young adults who are victims of maxillofacial injuries resulting from firearm aggression

Carlos José de Paula Silva Paula Cristina Pelli Paiva Liliam Pacheco Pinto de Paula Jussara de Fátima Barbosa Fonseca Rafaella Almeida Silvestrini Marcelo Drummond Naves Ana Clara Mourão Moura Efigênia Ferreira e Ferreira About the authors

Abstract

The study investigated the spatial pattern of cases of maxillofacial injury resulting from firearm aggression among teenagers and young adults and analyzed the comparison of income differentials in these areas based on the residence of the victims. This is a cross-sectional study with data from victims attended in three hospitals in Belo Horizonte, State of Minas Gerais, from January 2008 to December 2010. The addresses of the victims were georeferenced by geocoding. Randomness and point density trends were analyzed using Ripley's K function and Kernel maps. The spatial interaction between the homes of adolescents and young adults was verified through the K12 function. Records of 218 cases of assault with a male predominance (89.9%) and young adults (70.6%) were found. Household clusters were distributed on an aggregate basis in the urban space with a confidence level of 99% and similar spatial aggregation levels. The hotspots converged on 7 shantytowns or neighboring regions with higher income population revealing spread of events. Hotspots focused on slums with a history of crimes linked to drug trafficking. The incorporation of space in the dynamics of events showed that the economic condition in isolation did not limit victimization.

Key words
Spatial analysis; Geographic Information System; Maxillofacial injury; Violence

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