Fig. 3
From: Spatially varying effects of measured confounding variables on disease risk
A SIDS Incidence Intensity-Level Map in North Carolina by Generalized Map-based Pattern Recognition Procedure. Fifty-two medium-risk counties are indicated in white that are not considered to be used in constructing hierarchical intensity clusters of peak and low SIDS incidence. B Most Likely and Secondary SIDS Clusters Map in North Carolina by Spatial Scan Statistic. Seventy-six counties are indicated in white that do not lie in the most likely and secondary disease clusters of peak SIDS incidence or the most likely disease cluster of low SIDS incidence