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Sahlgrenska Academy Self-reported Cognitive Impairment Questionnaire (SASCI-Q) - a research tool discriminating between subjectively cognitively impaired patients and healthy controls.

Artikel i vetenskaplig tidskrift
Författare Marie Eckerström
Johanna Skoogh
Sindre Rolstad
Mattias Göthlin
Gunnar Steineck
Boo Johansson
Anders Wallin
Publicerad i International psychogeriatrics / IPA
Volym 25
Nummer/häfte 3
Sidor 420-430
ISSN 1741-203X
Publiceringsår 2013
Publicerad vid Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi
Institutionen för kliniska vetenskaper, sektionen för onkologi, radiofysik, radiologi och urologi, Avdelningen för onkologi
Psykologiska institutionen
Sidor 420-430
Språk en
Länkar dx.doi.org/10.1017/S104161021200184...
Ämnesord cognitive assessment; dementia; mild cognitive impairment (MCI); memory clinics
Ämneskategorier Medicinska grundvetenskaper, Neurovetenskap

Sammanfattning

ABSTRACT Background: Subjective cognitive impairment (SCI) is a potential early marker for actual cognitive decline. The cognitive manifestation of the SCI stage is, however, largely unknown. Self-report instruments developed especially for use in the SCI population are lacking, and many SCI studies have not excluded mild cognitive impairment and dementia. We developed and tested a patient-based questionnaire on everyday cognitive function aiming to discriminate between patients with subjective, but not objective, cognitive impairment and healthy controls. Methods: Individuals experiencing cognitive impairment were interviewed to generate a pool of items. After condensing to 97 items, we tested the questionnaire in 93 SCI patients seeking care at a memory clinic (age M = 64.5 years, Mini-Mental State Examination (MMSE) M = 29.0) and 50 healthy controls (age M = 69.6 years, MMSE M = 29.3). Further item reduction was conducted to maximize that remaining items would discriminate between SCI patients and controls, using a conservative α level and requiring medium to high effect sizes. Internal consistency reliability and convergent validity was subsequently examined. Results: Forty-five items discriminated between the groups, resulting in the Sahlgrenska Academy Self-reported Cognitive Impairment Questionnaire (SASCI-Q). Internal consistency was high and correlations to a single question on memory functioning were of medium to large sizes. Most remaining items were related to the memory domain. Conclusion: The SASCI-Q discriminates between SCI patients and healthy controls and demonstrates satisfying psychometric properties. The instrument provides a research method for examining SCI and forms a foundation for future examining which SCI symptoms predict objective cognitive decline. The cognitive manifestation of the SCI stage is mostly related to experiences of memory deficits.

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