Figure 1From: Mapping amyotrophic lateral sclerosis lake risk factors across northern New EnglandGlobal Moran’s I, a global measure of spatial autocorrelation, calculated using tract-level aggregated ALS case data. Results are shown for 4 and 8 nearest neighbors (NN) and distance bands of 0.68 DD and 1.0 DD. The highest level of spatial autocorrelation is observed at a scale of 4 nearest neighbors.Back to article page