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Author Almkvist, O.; Bosnes, O.; Bosnes, I.; Stordal, E. url  doi
  Title Selective impact of disease on short-term and long-term components of self-reported memory: a population-based HUNT study Type Journal Article
  Year 2017 Publication BMJ Open Abbreviated Journal BMJ Open  
  Volume 7 Issue 5 Pages e013586  
  Keywords Hunt; disease; health; long-term memory; short-term memory; subjective memory  
  Abstract BACKGROUND: Subjective memory is commonly considered to be a unidimensional measure. However, theories of performance-based memory suggest that subjective memory could be divided into more than one dimension. OBJECTIVE: To divide subjective memory into theoretically related components of memory and explore the relationship to disease. METHODS: In this study, various aspects of self-reported memory were studied with respect to demographics and diseases in the third wave of the HUNT epidemiological study in middle Norway. The study included all individuals 55 years of age or older, who responded to a nine-item questionnaire on subjective memory and questionnaires on health (n=18 633). RESULTS: A principle component analysis of the memory items resulted in two memory components; the criterion used was an eigenvalue above 1, which accounted for 54% of the total variance. The components were interpreted as long-term memory (LTM; the first component; 43% of the total variance) and short-term memory (STM; the second component; 11% of the total variance). Memory impairment was significantly related to all diseases (except Bechterew's disease), most strongly to brain infarction, heart failure, diabetes, cancer, chronic obstructive pulmonary disease and whiplash. For most diseases, the STM component was more affected than the LTM component; however, in cancer, the opposite pattern was seen. CONCLUSIONS: Subjective memory impairment as measured in HUNT contained two components, which were differentially associated with diseases.  
  Address Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title (up)  
  Series Volume Series Issue Edition  
  ISSN 2044-6055 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:28490551; PMCID:PMC5566596 Approved no  
  Call Number HUNT @ maria.stuifbergen @ Serial 1874  
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