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Long-Term Test-Retest Stability of ANAM in a Large Military Sample.

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The Automated Neuropsychological Assessment Metrics (ANAM) demonstrate good long-term stability. Cognitive assessments remain reliable for up to five years, supporting the use of ANAM baselines for military personnel.

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AssessmentHead injuryNorms/normative studiesTraumatic brain injury

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Area of Science:

  • Neuroscience
  • Psychology
  • Military Health

Background:

  • Cognitive assessment is crucial for monitoring military personnel.
  • The Automated Neuropsychological Assessment Metrics (ANAM) is a widely used tool.
  • Understanding the long-term stability of ANAM is essential for its effective application.

Purpose of the Study:

  • To evaluate the long-term test-retest reliability of the ANAM.
  • To determine stability over 1-year, 3-year, and 5-year intervals.
  • To inform the use of ANAM baselines in longitudinal studies.

Main Methods:

  • Longitudinal study of active duty military personnel.
  • Administration of ANAM at baseline and follow-up (1, 3, or 5 years).
  • Exclusion of participants with cognitive issues or TBI between assessments.

Main Results:

  • High intra-class correlations (ICCs) observed across all time points.
  • ICCs generally ranged from .6 to .8 for most scales.
  • Simple reaction time measures showed slightly lower ICCs (.596 at 5 years).

Conclusions:

  • The ANAM demonstrates robust stability over extended periods.
  • Baseline ANAM data remains valid for comparison up to five years post-initial assessment.
  • Supports the continued use of ANAM for tracking cognitive health in military populations.