Screening for dementia by telephone using the memory impairment screen.

Area of Science:

• Gerontology
• Neurology
• Psychometrics

Background:

• Early detection of dementia, particularly Alzheimer's disease (AD), is crucial for timely intervention and management.
• Telephone-based cognitive screening offers a convenient and accessible method for assessing cognitive function in elderly populations.
• Existing screening tools vary in their efficiency, accuracy, and applicability across different demographic groups.

Purpose of the Study:

• To develop and validate telephone-based screening tests for dementia and Alzheimer's disease (AD).
• To assess the accuracy, sensitivity, and specificity of these telephone screening tools.
• To provide normative data for telephone cognitive tests to aid in dementia screening.

Main Methods:

• A cross-sectional validation study was conducted within the Einstein Aging Study.
• Three hundred elderly community volunteers, including 27 with diagnosed dementia (18 with AD), participated.
• Telephone screening included the Memory Impairment Screen by telephone (MIS-T), Category Fluency Test (CF-T), and Telephone Instrument for Cognitive Status (TICS), followed by in-person clinical evaluation.

Main Results:

• The telephone battery, including MIS-T, CF-T, and TICS, was well-accepted by participants.
• The MIS-T demonstrated excellent sensitivity and specificity, outperforming CF-T and TICS in differentiating dementia.
• At 78% sensitivity, MIS-T achieved 93% specificity, significantly higher than CF-T (78%) and TICS (80%).

Conclusions:

• The Memory Impairment Screen by telephone (MIS-T) is a highly valid and time-efficient telephone screen for dementia.
• MIS-T is recommended for applications prioritizing optimal efficiency and accuracy in dementia screening.
• The study provides valuable normative data for MIS-T, CF-T, and TICS for diverse dementia prevalence settings.