Abstract
Objective: To investigate the psychometric properties of the Clinical Dementia Scale—frontotemporal lobar degeneration (CDR-FTLD) psychometric properties using Rasch analysis and its sensitivity distinguishing disease progression between FTLD and Alzheimer's disease (AD). Methods: Of 603 consecutive patients from the National Alzheimer Coordinating Center dataset (FTLD = 350; AD = 253), 120 FTLDs were included in a Rasch analysis to verify CDR-FTLD psychometric properties; 483 (FTLD = 230; AD = 253) were included to analyse disease progression, with 195 (FTLD = 82; AD = 113) followed-up (24 months). Results: The CDR-FTLD demonstrated good consistency, construct and concurrent validity and correlated well with mini-mental state examination (MMSE) and disease duration (ps < 0.05). At baseline, FTLD showed greater dementia severity than AD after matched for MMSE and disease duration (p < 0.001). Independent Rasch analyses demonstrated different patterns of progression for FTLD and AD in terms of the domains initially and then subsequently affected with disease progression. At follow-up, although MMSE showed significant changes (p < 0.05), these were greater on the CDR-FTLD (p < 0.001). Conclusion: The CDR-FTLD satisfactorily measures dementia severity and change in FTLD, distinguishing disease progression between FTLD and AD, with clear implications for care, prognosis and future clinical trials.
Original language | English (US) |
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Pages (from-to) | 977-982 |
Number of pages | 6 |
Journal | International Journal of Geriatric Psychiatry |
Volume | 32 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2017 |
Keywords
- CDR-FTLD
- dementia severity
- disease progression
- frontotemporal dementia
- frontotemporal lobar degeneration
ASJC Scopus subject areas
- Geriatrics and Gerontology
- Psychiatry and Mental health