Table 1.

Terms and definitions related to social network analysis

Term	Definition
Node	An individual, group, or organization [59].
Connectivity	Minimum number of network members (represented as nodes) which need to be removed to disconnect the remaining nodes from each other [59].
Ties	Links between/among nodes in the network. Strong ties are associated with homophily and propinquity, while weak ties are associated with bridges [60].
Bridge	Weak ties that provide the only link between two individuals or clusters [60].
Betweenness centrality	Measure of a node’s centrality in a network and is equal to the number of shortest paths from all vertices to all others that pass through that node. A node with high betweenness has great influence over what does and does not flow through the network [59].
Brokerage positions	Facilitate transactions (such as co-authorship, knowledge, or communication) between others that are lacking access to or trust in one another [60].