Fig. 3.

(A-B) Network of physicians at ICD hub hospitals. The patient-sharing practices of physicians at St. Mary Medical Center (A) and Memorial Hospital (B) are shown. Nodes represent physicians and are colored by specialty and sized by degree. Edges are weighted by the number of shared patient visits between the physicians. For a cleaner graph, edges with a weight of one were not visualized. (C-D) The correlations, presented as percentages to conserve space, between centrality measures calculated from the within-hospital or the broader within-HRR networks for physicians at St. Mary Medical Center (C) and Memorial Hospital (D) are shown