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(A) Density heatmap of the birth records (left) and LBW model interaction estimates for different buffer segments, using LA County as the reference (right). The full results for these models can be found in table S4. (B) Middle and West Aliso Segments: Observed and expected LBW prevalence and the model estimated interaction term on the log scale, using LA County as the reference. Results from the crude model are shown.
