Appendix Table A1.

Thresholding Sensitivity Analysis

	No Threshold			30 Percent			20 Percent			10 Percent
	Mean	Min	Max	Mean	Min	Max	Mean	Min	Max	Mean	Min	Max
Average Threshold	1.00	1.00	1.00	4.27	1.47	12.05	6.18	2.09	15.97	10.21	3.72	22.89
Number of nodes	1,339	135	8,197	1,339	135	8,197	1,339	135	8,197	1,337	135	8,197
Number of ties	108,634	4,103	695,672	70,743	2,134	549,393	50,927	1,568	392,582	28,827	830	226,194
Density	0.23	0.02	0.67	0.12	0.01	0.34	0.09	0.01	0.24	0.05	0.01	0.13
Adjusted Degree per 100 Patients	66.77	36.53	111.08	39.05	16.59	76.93	27.26	11.69	54.42	14.65	5.79	29.25
Clustering	0.63	0.42	0.85	0.56	0.38	0.70	0.55	0.40	0.67	0.53	0.44	0.63
PCP Relative Centrality	0.38	0.17	1.03	0.38	0.18	1.06	0.38	0.19	1.07	0.41	0.14	1.12
Specialists Relative Centrality	2.95	0.97	5.79	3.10	0.94	5.45	3.07	0.94	5.35	2.96	0.90	7.11