Table 3.

Linear regression models between each of network attributes (i.e. degree centralisation, betweenness centralisation and density) of PCN and hospital performance measures (i.e. hospitalisation cost and readmission rate)

Model	Dependent variable	Independent variable	R2 value	β	Constant	Significance
1	Hospitalisation cost	Degree centralisation	0.012	5906.42	19545.39	0.309
2	Readmission rate	Degree centralisation	0.139	−37.87	45.48	0.003
3	Hospitalisation cost	Betweenness centralisation	0.107	−12384.79	27101.96	0.015
4	Readmission rate	Betweenness centralisation	0.112	−25.18	18.19	0.010
5	Hospitalisation cost	Density	0.118	17310.51	19635.69	0.009
6	Readmission rate	Density	0.196	49.08	3.427	0.000