Asking family about memory loss. Is it helpful?

Area of Science:

• Gerontology
• Neurology
• Epidemiology

Background:

• Cognitive impairment and dementia are significant health concerns in aging populations.
• Early and accurate detection of cognitive decline is crucial for timely intervention and management.
• Family member reports are sometimes used as a supplementary tool in assessing cognitive health.

Purpose of the Study:

• To evaluate the accuracy of family informant reports of memory loss compared to standardized clinical diagnoses of cognitive impairment.
• To determine the concordance between subjective family observations and objective clinical assessments of cognitive status in older adults.

Main Methods:

• The study utilized data from the Duke Established Populations for Epidemiologic Studies of the Elderly (EPESE), a 10-year longitudinal study.
• A stratified random sample of 157 older adults and their family informants were assessed.
• Methods included a neuropsychological battery for participants and direct questioning of informants regarding perceived memory loss.

Main Results:

• There was poor concordance (kappa=-0.05) between family reports of memory loss and clinical diagnoses of cognitive impairment or dementia.
• When family members reported memory loss, 30% of participants did not have a cognitive impairment.
• Conversely, 75% of participants diagnosed with cognitive impairment or dementia were not identified as having memory loss by their family informants.

Conclusions:

• Family informant reports of memory loss are an unreliable method for detecting cognitive impairment or dementia in older adults.
• The low sensitivity and specificity indicate that this approach may lead to both over-diagnosis and under-diagnosis.
• Clinical diagnostic tools remain essential for accurate assessment of cognitive status.