Abstract
The current study examines the social, racial, and economic determinants of homicide rates in the City of St. Louis using census tracts and 1000-m raster grids as geographic units for analysis. We used a meso and micro-level geographic scale to evaluate potential impacts associated with the modifiable areal unit problem. Using spatial interpolation, we generated redistributed values, based on area weighting, for explanatory variables. We applied spatial dependence regression models to assess the relationship with social, economic, and racial determinants in the analysis of homicide rates. At the census tract level, we do not find significant relationships between social, racial, and economic explanatory variables and homicide rates. Significant relationships are observed at the 1000-m grid level with income inequality, public assistance, and racial diversity and homicide rates. The results indicate a trade-off between the explanatory power of the census tract and the precision of the 1000-m raster grid.
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Notes
Ordinary Least Squares (OLS) regression models for census tracts and 1000-m raster grids, and for the race and racial diversity indicated the presence of spatial autocorrelation.
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Smith, T.A., Sandoval, J.S.O. A Spatial Analysis of Homicides in Saint Louis: The Importance of Scale. Spat Demogr 7, 57–82 (2019). https://doi.org/10.1007/s40980-018-00046-8
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DOI: https://doi.org/10.1007/s40980-018-00046-8