title: Usability of an adaptive computer assistant that improves self-care and health literacy of older adults.
abstract: OBJECTIVE
  We developed an adaptive computer assistant for the supervision of diabetics' self-care, to support limiting illness and need for acute treatment, and improve health literacy. This assistant monitors self-care activities logged in the patient's electronic diary. Accordingly, it provides context-aware feedback. The objective was to evaluate whether older adults in general can make use of the computer assistant and to compare an adaptive computer assistant with a fixed one, concerning its usability and contribution to health literacy.
  
  
  METHODS
  We conducted a laboratory experiment in the Georgia Tech Aware Home wherein 28 older adults participated in a usability evaluation of the computer assistant, while engaged in scenarios reflecting normal and health-critical situations. We evaluated the assistant on effectiveness, efficiency, satisfaction, and educational value. Finally, we studied the moderating effects of the subjects' personal characteristics.
  
  
  RESULTS
  Logging self-care tasks and receiving feedback from the computer assistant enhanced the subjects' knowledge of diabetes. The adaptive assistant was more effective in dealing with normal and health-critical situations, and, generally, it led to more time efficiency. Subjects' personal characteristics had substantial effects on the effectiveness and efficiency of the two computer assistants.
  
  
  CONCLUSIONS
  Older adults were able to use the adaptive computer assistant. In addition, it had a positive effect on the development of health literacy. The assistant has the potential to support older diabetics' self care while maintaining quality of life.
authors.affiliation: Mekelweg 4, Office 10.100, 2628 CD, Delft, The Netherlands. O.A.BlansonHenkemans@TUDelft.nl
authors.forename: O A
authors.initials: OA
authors.lastname: Blanson Henkemans
authors.forename: W A
authors.initials: WA
authors.lastname: Rogers
authors.forename: A D
authors.initials: AD
authors.lastname: Fisk
authors.forename: M A
authors.initials: MA
authors.lastname: Neerincx
authors.forename: J
authors.initials: J
authors.lastname: Lindenberg
authors.forename: C A P G
authors.initials: CA
authors.lastname: van der Mast
mesh_terms: D022126:Access to Information; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D002908:Chronic Disease; D003197:Computer Literacy; D003920:Diabetes Mellitus; D004522:Educational Status; D005260:Female; D006266:Health Education; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011788:Quality of Life; D012648:Self Care; D012656:Self-Help Devices