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Time From Initial Community-Based Dementia Consultation to Confirmed Diagnosis: A Retrospective Analysis
Akiko Yamazaki1,2, Masahiro Mishina1,3, Yuki Sakamoto2
1Dementia-Related Disease Medical Center, Nippon Medical School Musashi Kosugi Hospital, Kawasaki, Kanagawa, Japan.
Summary
Diagnostic delays for dementia vary by subtype, with Alzheimer
Area of Science:
- Neurology
- Geriatrics
- Public Health
Background:
- The advent of anti-amyloid beta antibody drugs necessitates rapid dementia diagnosis.
- Limited data exists on dementia diagnosis duration in Japanese prehospital consultation services.
- This study addresses the gap in understanding diagnostic timelines from initial consultation to confirmed diagnosis.
Purpose of the Study:
- To investigate the time from community-based dementia consultation to confirmed diagnosis.
- To identify factors contributing to diagnostic delays across different dementia subtypes.
Main Methods:
- Retrospective observational study of 739 patients diagnosed between 2010-2024.
- Analysis of time to diagnosis, divided into pre-hospital and in-hospital phases.
- Multivariable regression models used to identify factors associated with diagnostic delay.
Main Results:
- Time to diagnosis was shorter for Alzheimer disease (AD) than non-AD dementias.
- Prolonged pre-hospital delays were observed in non-AD cases.
- Older age, AD diagnosis, and primary care physician involvement correlated with shorter diagnosis times.
Conclusions:
- Significant differences in diagnostic delay exist between dementia subtypes.
- Community-based consultation pathways are crucial for reducing dementia diagnostic delays.
- Targeted interventions are needed, especially for non-AD dementia patients.
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