Memory evaluation in Alzheimer's disease. Caregivers' appraisals and objective testing

Area of Science:

• Gerontology
• Neuroscience
• Psychiatry

Background:

• Alzheimer's disease (AD) poses significant challenges for patients and caregivers.
• Accurate assessment of memory deficits is crucial for diagnosis and management.
• Caregiver reports are a potential source of information regarding patient cognitive status.

Purpose of the Study:

• To determine the reliability of caregiver reports on memory deficits in patients with Alzheimer's disease (AD).
• To evaluate the efficacy of a standardized questionnaire in assessing these deficits.
• To introduce and validate a new screening tool for memory impairment.

Main Methods:

• Compared caregiver responses on a memory questionnaire with objective cognitive measures (CERAD neuropsychological battery).
• Utilized the Self-report Memory Questionnaire with patients diagnosed with probable AD and healthy controls.
• Assessed activities of daily living, depression, and psychopathology using the CERAD clinical assessment battery.

Main Results:

• An abbreviated scale, the Short-Memory Questionnaire, demonstrated high sensitivity and specificity for dementia detection.
• Positive and negative predictive values for the Short-Memory Questionnaire were 63.5% and nearly 100%, respectively.
• Caregiver assessments of memory deficits strongly correlated with objective memory and cognitive measures.

Conclusions:

• Caregivers serve as dependable informants regarding memory impairments in individuals with Alzheimer's disease.
• The Short-Memory Questionnaire is a reliable, easily administered tool for screening memory difficulties in clinical and epidemiological studies.