AMPI-AB validity and reliability: a multidimensional tool in resource-limited primary care settings

Area of Science:

• Gerontology
• Primary Care Medicine
• Health Services Research

Background:

• Comprehensive Geriatric Assessment (CGA) aids early identification of high-risk older adults for tailored treatments in primary care.
• Evidence on CGA benefits in resource-limited settings remains controversial.
• The Multidimensional Assessment of Older People in Primary Care (AMPI-AB) is a CGA tool developed for such settings.

Purpose of the Study:

• To examine the validity and reliability of the AMPI-AB tool.
• To assess the AMPI-AB's ability to identify older adults requiring different levels of care in primary care settings.
• To evaluate the AMPI-AB's predictive accuracy for adverse health outcomes.

Main Methods:

• A longitudinal study with a median follow-up of 16 months was conducted.
• Concurrent validity was assessed using the Physical Frailty Phenotype.
• Predictive validity was evaluated against mortality, functional decline, hospitalizations, ER visits, and falls using ROC curves and regression models.

Main Results:

• The AMPI-AB demonstrated high accuracy in detecting frailty (AUC=0.851).
• The tool reliably predicted mortality, increased dependency, hospitalizations, ER visits, and falls.
• Excellent interrater, test-retest, and proxy reliability (ICC > 0.84) were observed, with a mean administration time of under 6 minutes.

Conclusions:

• The AMPI-AB is a valid and reliable instrument for geriatric assessment in primary care.
• Its accuracy and efficiency make it suitable for managing older adults in resource-limited primary care settings.
• The AMPI-AB facilitates timely interventions for at-risk older populations.