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Clinical Manifestations.

Karen Blackmon1

  • 1Brain and Mind Institute, Aga Khan University, Nairobi, Kenya; Geisel School of Medicine at Dartmouth, Hanover, NH, USA.

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Summary
This summary is machine-generated.

A new International Brain Health Index (IBHI) offers a harmonized global measure for tracking brain health loss. This index accounts for diverse populations and incorporates digital tools for accurate assessment and intervention tracking.

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Area of Science:

  • Neuroscience
  • Global Health
  • Biostatistics

Background:

  • A globally applicable and culturally relevant brain health index is crucial for monitoring and predicting brain health decline.
  • Existing methods struggle to incorporate digital tools, quantify individual/population-level brain health, or adapt to diverse sociocultural contexts.
  • Challenges include tracking changes over time and addressing brain health loss from various exposures.

Purpose of the Study:

  • To propose an International Brain Health Index (IBHI) for harmonized global tracking of brain health loss.
  • To develop an index that absorbs digital assessment advancements and quantifies brain health at multiple levels.
  • To ensure the index characterizes the burden, severity, and profile of brain health loss while respecting cultural diversity.

Main Methods:

  • Leveraging the Alkire-Foster counting method for harmonizing diverse data, similar to poverty estimation.
  • A stepwise process involving selection of brain health domains and context-specific indicators, including digital tools.
  • Utilizing local normative data for cut-offs and defining brain health loss based on domain deprivation thresholds.

Main Results:

  • The proposed IBHI allows for flexibility in indicator selection while harmonizing core components like domains and classification criteria.
  • It enables the modeling of individual and population-level brain health loss, particularly in low- and middle-income countries (LMICs).
  • The index addresses limitations of existing neuropsychological tools in diverse regions and facilitates the integration of novel digital technologies.

Conclusions:

  • The IBHI provides a framework for fair harmonization of brain health assessment across diverse global settings.
  • It has the potential to significantly advance global brain health equity by enabling accurate measurement and comparison.
  • This approach supports the tracking of interventions and the understanding of factors contributing to brain health loss worldwide.