title: Inferring community structure in healthcare forums. An empirical study.
abstract: BACKGROUND
  Detecting community structures in complex networks is a problem interesting to several domains. In healthcare, discovering communities may enhance the quality of web offerings for people with chronic diseases. Understanding the social dynamics and community attachments is key to predicting and influencing interaction and information flow to the right patients.
  
  
  OBJECTIVE
  The goal of the study is to empirically assess the extent to which we can infer meaningful community structures from implicit networks of peer interaction in online healthcare forums.
  
  
  METHODS
  We used datasets from five online diabetes forums to design networks based on peer-interactions. A quality function based on user interaction similarity was used to assess the quality of the discovered communities to complement existing homophily measures.
  
  
  RESULTS
  Results show that we can infer meaningful communities by observing forum interactions. Closely similar users tended to co-appear in the top communities, suggesting the discovered communities are intuitive. The number of years since diagnosis was a significant factor for cohesiveness in some diabetes communities.
  
  
  CONCLUSIONS
  Network analysis is a tool that can be useful in studying implicit networks that form in healthcare forums. Current analysis informs further work on predicting and influencing interaction, information flow and user interests that could be useful for personalizing medical social media.
authors: Norwegian Center for Integrated Care and Telemedicine, University Hospital of North Norway, 9038 Tromsø, Norway. taridzo.chomutare@telemed.no
authors: T
authors: T
authors: Chomutare
authors: E
authors: E
authors: Arsand
authors: L
authors: L
authors: Fernandez-Luque
authors: J
authors: J
authors: Lauritzen
authors: G
authors: G
authors: Hartvigsen
mesh_terms: D000465:Algorithms; D003920:Diabetes Mellitus; D036262:Empirical Research; D006801:Humans; D020407:Internet; D010379:Peer Group; D012944:Social Support; D014481:United States