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. 2016 Oct 13;13:E145. doi: 10.5888/pcd13.160107

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A map showing 4 significant clusters of hospitalizations for substance abuse disorders in New Orleans after Katrina (2008). Geographic patterns of hospitalizations shifted post-Katrina to the eastern corner of Mid-City (the neighborhood bordering the French Quarter and Central Business District) the Lower 9th Ward, Algiers, and the southeast corner of the Mid-City planning districts. — Clusters of hospitalizations for substance abuse disorders at the block group level calculated by using the discrete Poisson model with sex and age group as covariates, New Orleans, 2008. The most likely cluster was the eastern corner of Mid-City (relative risk [RR], 831.23). The next highest, in order, were the north corner of the Lower 9th Ward (RR = 11.91), Algiers (RR = 0.40), and the southeast corner of Mid-City (RR = 23.38).