Table 3.

Summary of Best Imputation Options for Centralization Measures.

Measure	Directed or Undirected	Non-response Type	Size and Centralization	Best Imputation Option
Degree Std	Undirected	Any	Any	Any strategy except Listwise Deletion
Bon Power Std	Undirected	Any	Small	Model-Baseda
Bon Power Std	Undirected	Any	Medium/Large	Listwise Deletion
Closeness Std	Undirected	Any	Any	Model-Based
Betweenness Std	Undirected	Any	Any	Any strategy except Listwise Deletion
Indegree Std	Directed	Any	Any	Model-Based (complex)
Total Degree Std	Directed	Any	Any	Model-Based (complex) or Symmetric
Bon Power Std	Directed	Any	Any	Model-Based
Closeness Std	Directed	Central Nodes	Decentralized	Model-Based (complex) or Symmetric
Closeness Std	Directed	Less Central Nodes	Decentralized	Symmetric or Probabilistic
Closeness Std	Directed	Any	Centralized	Probabilistic or Listwise Deletion
Betweenness Std	Directed	Any	Decentralized	Model-Based or Symmetric
Betweenness Std	Directed	Any	Centralized	Model-Based or Probabilistic

Notes.

^a:The model-based approach is assumed to correspond to complex or simple unless explicitly noted.