Narrative minireview of the spatial epidemiology of substance use disorder in the United States: Who is at risk and where?

Figure 4 Spatial distribution of the opioid overdose epidemic in Ohio. A: Spatial distribution of opioids overdose mortality rate in Ohio; B: Bivariate map illustrating counties with high opioid overdose mortality rate (purple) and high density of pharmacies (blue). Counties in dark color have both high opioids overdose mortality and density of pharmacies dispensing naloxone. Maps were generated using ArcGIS Pro. 2.8[86].