title: Enabling flexible integration of healthcare information using the entity-attribute-value storage model.
abstract: BACKGROUND
  For an optimal care of patients in home healthcare, it is essential to exchange healthcare-related information with other stakeholders. Unfortunately, paper-based documentation procedures as well as the heterogeneity between information systems inhibit a well-regulated communication. Therefore, a digital patient care record is introduced to establish the foundation for integrating healthcare-related information.
  
  
  METHODS
  For the digital patient care record, suitable integration techniques are required that store data in a compact way and offer flexibility as well as robustness. For this purpose, a generic storage structure based on the entity-attribute-value (EAV) model is introduced. This storage structure fulfills the stated requirements and incoming information can be stored directly without any loss of data.
  First performance tests regarding the query response time are given in this paper. The tests measured the connection time, the query execution time, and the time for traversing the result set. The time for executing the query is lowest. The time for traversing the results strongly depends on the number of documents. A concept comparison to other integration techniques is also presented.
  
  
  CONCLUSIONS
  This approach offers flexibility concerning different standard types and the evolution in healthcare knowledge and processes. It also allows for highly sparse data to be stored in a compact way. The underlying database structure is presented, the import process for extracting incoming reports is described and the export process for generating new outgoing standardized reports is briefly illustrated.
authors.affiliation: Database Research Group, University of Rostock, 18051 Rostock, Germany.
authors.forename: Dortje
authors.initials: D
authors.lastname: Löper
authors.affiliation: Database Research Group, University of Rostock, 18051 Rostock, Germany.
authors.forename: Meike
authors.initials: M
authors.lastname: Klettke
authors.affiliation: Database Research Group, University of Rostock, 18051 Rostock, Germany.
authors.forename: Ilvio
authors.initials: I
authors.lastname: Bruder
authors.affiliation: Database Research Group, University of Rostock, 18051 Rostock, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Heuer
references.citation: Int J Med Inform. 2004 Aug;73(7-8):569-80
references.pmid: 15246037
references.citation: Comput Methods Programs Biomed. 2006 Apr;82(1):38-43
references.pmid: 16556470
references.citation: Int J Med Inform. 2007 Feb-Mar;76(2-3):201-7
references.pmid: 16769243
references.citation: J Am Med Inform Assoc. 2007 Jan-Feb;14(1):86-93
references.pmid: 17068350
references.citation: Stud Health Technol Inform. 2005;116:340-5
references.pmid: 16160282
references.citation: J Am Med Inform Assoc. 2000 Sep-Oct;7(5):475-87
references.pmid: 10984467
references.citation: J Am Med Inform Assoc. 1999 Nov-Dec;6(6):478-93
references.pmid: 10579606