Unfolding similarity in interphysician networks: the impact of institutional and professional homophily

Table 1 Pearson correlation coefficients*

	Variable	1	2	3	4	5	6	7	8	9
1	Professional Network	-
2	Age (difference in)	0.004	-
3	Gender (same category)	0.021	−0.030	-
4	Years since Graduation (difference in)	−0.008	0.852	−0.031	-
5	Professional Homophily (same category)	0.341	−0.001	0.035	0.004	-
6	Tenure I-NHS (difference in)	0.003	0.748	−0.024	0.738	−0.004	-
7	Tenure LHA (difference in)	−0.001	0.427	−0.001	0.449	0.006	0.532	-
8	Managerial Role (same category)	−0.039	−0.171	0.024	−0.162	−0.013	−0.205	−0.116	-
9	Institutional Homophily (same affiliation)	0.219	0.052	0.004	−0.014	0.231	−0.012	−0.036	0.007	-
10	Geographical Proximity	−0.066	−0.010	−0.001	−0.016	−0.056	−0.008	−0.008	0.012	−0.186

*QAP correlation coefficients (observations = 87,912 - number of permutations = 1,000). Significant coefficients are reported in bold (p < 0.05).

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