Validity and psychometric properties of the Severe Cognitive Rating Scale‐English version, among individuals with dementia
Abstract Background Commonly used screening measures of cognitive function such as the Montreal Cognitive Assessment (MoCA) are not sensitive to assess cognitive function among individuals with severe cognitive impairment due to floor effect. The Severe Cognitive Impairment Rating Scale (SCIRS) was designed to assess cognitive function in those with severe cognitive impairment, however, psychometric properties of its English version have not been reported. Method Using the existing data from StaN and tTED studies, floor and ceiling effects (percentage of minimal or maximal scores) of SCIRS and MoCA were examined, and the association between SCIRS and MoCA was evaluated. Result Data from 141 participants (mean age = 78.7, 56% females) who completed either the SCIRS (n = 122) or MoCA (n = 80) were collected (n = 61 completed both). There was robust association between SCIRS and MoCA, supporting criterion validity of the SCIRS as a measure of cognitive function. SCIRS had a lower floor effect (13.1% minimal scores) as compared to the MoCA (27.5% minimal scores). Out of 22 participants with minimal scores on the MoCA, 16 participants completed the SCIRS with mean score of 9.8 (SD = 7.5). Conclusion SCIRS appears to be a valid measure of cognitive function, showing better variance among individuals with severe cognitive impairment, as compared to MoCA.
Authors
- Bruce G. Pollock (ORCID: https://orcid.org/0000-0003-0802-3998)
- Lisa Van Bussel
- Zahinoor Ismail (ORCID: https://orcid.org/0000-0002-5529-3731)
- Sarah Elmi
- Philip Gerretsen (ORCID: https://orcid.org/0000-0003-4053-6814)
- Benoit H. Mulsant (ORCID: https://orcid.org/0000-0002-0303-6450)
- Linda Krisman
- Matan Soffer (ORCID: https://orcid.org/0000-0001-5323-8598)
- Sreedharan Harikrishnan (ORCID: https://orcid.org/0000-0001-9130-9932)
- Aviva Rostas
- Simon Davies (ORCID: https://orcid.org/0000-0003-0095-5993)
- Sarah Colman (ORCID: https://orcid.org/0000-0002-8332-4638)
- Peter Derkach
- Soham Rej (ORCID: https://orcid.org/0000-0002-3908-9124)
- Ariel Graff‐Guerrero (ORCID: https://orcid.org/0000-0001-9301-2171)
- Donna Kim
- Tarek K. Rajji (ORCID: https://orcid.org/0000-0002-8324-2560)
- Rola Moghabghab (ORCID: https://orcid.org/0000-0001-9487-3467)
- Sanjeev Kumar (ORCID: https://orcid.org/0000-0002-8115-353X)
- Amer M. Burhan (ORCID: https://orcid.org/0000-0002-9888-008X)
- Hiba Alhabbal
- Vasavan Nair
- Li Chu
- Maria Hussain
Institutions
- University of North Carolina at Chapel Hill (US)
- Western University (CA)
- Centre for Addiction and Mental Health (CA)
- University of Calgary (CA)
- University of Toronto (CA)
- Queen's University (CA)
- Ontario Shores Centre for Mental Health Sciences (CA)
- Toronto Dementia Research Alliance (CA)
- Hotchkiss Brain Institute (CA)
- McGill University (CA)
Publication Details
- Journal
- Alzheimer s & Dementia
- Published
- 2024-12-01
- DOI
- https://doi.org/10.1002/alz.087159
- Primary Topic
- Dementia and Cognitive Impairment Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00