BrainCheck - a very brief tool to detect incipient cognitive decline: optimized case-finding combining patient- and...

Area of Science:

• Gerontology
• Cognitive Science
• Primary Care Medicine

Background:

• Subtle cognitive impairment requires multi-faceted assessment in primary care.
• Existing tools may lack brevity or comprehensive data integration.
• A need exists for a quick, valid case-finding instrument for general practitioners.

Purpose of the Study:

• To develop and validate 'BrainCheck,' a novel, brief case-finding tool for cognitive impairment.
• To integrate patient subjective reports, cognitive testing, and informant data.
• To assess the feasibility and accuracy of BrainCheck in a primary care context.

Main Methods:

• Developed BrainCheck combining patient memory/depression questions, clock drawing, and the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE).
• Feasibility assessed via 52 general practitioners' ratings.
• Validation involved 288 Memory Clinic patients (MCI, Alzheimer's, depression) and 126 healthy controls.

Main Results:

• General practitioners found the patient-directed tool highly feasible and acceptable.
• A Classification and Regression Tree algorithm yielded an 81.2% correct classification rate (CCR) for patient-directed data alone.
• The combined BrainCheck (patient + informant) achieved a 89.4% CCR, with high sensitivity (97.4%) and specificity (81.6%).

Conclusions:

• BrainCheck is a brief, feasible, and highly accurate tool for identifying cognitive impairment in primary care.
• The integration of patient, cognitive, and informant data significantly enhances diagnostic accuracy.
• BrainCheck aids general practitioners in making informed decisions regarding further evaluation of suspected cognitive decline.