Abstract
People with epilepsy frequently express concern about the burden of memory problems in their everyday lives. Self-report memory questionnaires may provide valuable insight into individuals’ perceptions of their everyday memory performance and changes over time. Yet, despite their potential utility, the measurement properties of self-report memory questionnaires have not been evaluated in epilepsy. This systematic review aimed to provide a critical appraisal of the measurement properties of self-report memory questionnaires for adults with epilepsy. Following protocol registration (PROSPERO CRD42020210967), a systematic search of PubMed, EMBASE, Web of Science, CINAHL, and PsychInfo from database inception until 27 May 2021 was conducted. Eligible studies were published in English-language peer-reviewed journals, recruited adults with epilepsy, and reported on the development or evaluation of the measurement properties of a self-report memory questionnaire. The COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) methodology was used to evaluate each study of a measurement property, and results were qualitatively synthesised. In total, 80 articles and one test manual were located containing 153 studies of measurement properties pertinent to 23 self-report memory questionnaires. Overall, no scale could be recommended outright for the evaluation of subjective memory symptoms in adults with epilepsy. This was due to the near absence of dedicated content validation studies relevant to this population and shortcomings in the methodology and scientific reporting of available studies of structural validity. Recommendations to support the advancement and psychometric validation of self-report memory questionnaires for people with epilepsy are provided.
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Data Availability
All the reviewed studies are publicly available.
Code Availability
Not applicable.
Notes
Throughout this paper we have adopted the term ‘symptom’ to more precisely describe what have otherwise become known as ‘complaints’.
Correlational data are summarized in-text as the range in absolute values given it is the magnitude of effect that is important for this purpose rather than the direction of the relationship (which is determined by the response format of the SMQ). Refer to Online Resource 11 for the directional correlation values
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Acknowledgements
Dr Kate Thompson is grateful to the Royal Brisbane and Women’s Hospital Foundation for financial support in the form of a post-graduate scholarship. The authors would also like to thank Miranda Newell (Health Librarian, the University of Queensland) for her review and feedback on the search strategy and Stacey Llewellyn (Biostatistician, Queensland Institute of Medical Research) for statistical advice.
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Dr Thompson was in receipt of a postgraduate scholarship from the Royal Brisbane and Women’s Hospital Foundation.
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Kate Thompson, Tamara Ownsworth and David Reutens conceptualised the study. Kate Thompson planned the study methodology, conducted the literature search, screened articles for eligibility, reviewed eligible studies, extracted and analysed data, wrote the original manuscript draft, and contributed to manuscript revisions. Ada Lo assisted with article screening and Ada Lo and Hannah McGlashan contributed a second independent review of eligible studies. The study was supervised by David Reutens, Catherine Haslam and Tamara Ownsworth. All authors critically reviewed and revised the work. All authors read and approved the final manuscript.
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Thompson, K., Lo, A.H.Y., McGlashan, H.L. et al. Measures of Subjective Memory for People with Epilepsy: A Systematic Review of Measurement Properties. Neuropsychol Rev 34, 67–97 (2024). https://doi.org/10.1007/s11065-022-09568-x
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DOI: https://doi.org/10.1007/s11065-022-09568-x