Combining the AD8 and MMSE for community-based dementia screening

Area of Science:

• Gerontology and Cognitive Health
• Public Health Screening Programs
• Neurological Diagnostics

Background:

• Accurate dementia detection in community settings is crucial for timely intervention.
• Existing cognitive tests may have limitations in sensitivity and specificity.
• The Mini-Mental State Examination (MMSE) and Ascertain Dementia 8 (AD8) are commonly used screening tools.

Purpose of the Study:

• To evaluate the combined diagnostic accuracy of the MMSE and AD8 for dementia detection.
• To compare the efficacy of combined screening with individual test performance.
• To assess the utility of these cognitive tests in a community-based screening program.

Main Methods:

• Recruitment from a community-based integrated screening program in Tainan, Taiwan.
• Administration of the AD8 and the Chinese version of the MMSE by psychologists.
• Neurological assessment for dementia diagnosis based on established guidelines.
• Statistical analysis using logistic regression and Receiver Operating Characteristic (ROC) curves.

Main Results:

• The parallel application of MMSE and AD8 demonstrated superior dementia detection accuracy (AUC: 82.3%) compared to individual tests.
• Combined parallel screening yielded 88.89% sensitivity and 70.16% specificity.
• Serial testing (AD8 followed by MMSE) showed 50% sensitivity and 93.02% specificity.

Conclusions:

• The combination of the MMSE and AD8 significantly enhances dementia detection accuracy in community settings.
• This combined screening strategy offers improved diagnostic performance over individual cognitive tests.
• The findings support the integration of MMSE and AD8 for more effective dementia screening.