FIGURE 4. Neighborhood-level variations in the prevalence of
substance-related disorders, split into a spatially structured component
(top) and an unstructured component (bottom), as estimated
from the empty hierarchical geostatistical model for all inhabitants
aged 40–59 years in Malmo¨ , Sweden, in 2001. The quartiles used to
draw the maps were derived from the distribution of random effects for
the 65,830 individuals.