Fig 1.
The weighted degree, 16, of the central hospital is the sum of all patients shared with other hospitals (4+6+2+2+2).
Fig 2.
Inter–hospital networks in A) California 2011 and B) Florida 2014, where each node represents one hospital, and the links represents shared patients. Hospital node size represents the hospital’s weighted degree, where larger nodes have higher degrees and are more central in the network. Hospital node color represents the hospital’s centrality quartile, where the dark red nodes (quartile 4) are most central. Hospitals are clustered according to how many patients they share.
Fig 3.
Distribution of weighted degree centrality of hospitals in A) Florida and B) California. These histograms show a high number of low centrality (peripheral) hospitals and a low number of high frequency (hub) hospitals.
Table 1.
Patient characteristics in Florida 2014 and California 2011.
Fig 4.
Adjusted hospital all–cause mortality versus hospital centrality in Florida and California.
Table 2.
Overall and disease–specific adjusted mortality and length of stay by hospital centrality quartile for Florida and California.