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  3. Test-retest Reliability Of The Triangle Completion Test.
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  3. Test-retest Reliability Of The Triangle Completion Test.

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Test-Retest Reliability of the Triangle Completion Test.

Nathan Gabriel Sattah1, Erin E Hernon2, Courtney D Hall3

  • 1School of Medicine, Duke University, Durham, NC.

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|April 27, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

The Triangle Completion Test (TCT) shows fair reliability for angular deviation but poor reliability for endpoint error in older adults. Further refinements are needed to improve its clinical use in spatial navigation assessment.

Keywords:
spatial orientationstatistical reliabilitytriangle completion testvestibular rehabilitation

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Area of Science:

  • Gerontology
  • Neuroscience
  • Biomechanics

Background:

  • The Triangle Completion Test (TCT) is a clinical tool assessing spatial navigation and its link to vestibular function.
  • Limited data exist on the statistical reliability of the TCT, impacting its clinical utility.

Purpose of the Study:

  • To evaluate the test-retest reliability of the Triangle Completion Test (TCT) in older adults.
  • To determine the consistency of TCT measurements over a short interval.

Main Methods:

  • A test-retest reliability study was conducted with 20 participants aged 60+.
  • Participants completed four TCT trials in two sessions, separated by three hours, measuring endpoint error and angular deviation.

Main Results:

  • Angular deviation demonstrated fair test-retest reliability (ICC=0.72), with a minimal detectable change (MDC) of 7.13 degrees.
  • Endpoint error exhibited poor reliability (ICC=0.05) with a high MDC of 144.7 cm.

    • Conclusions:

    • TCT angular deviation shows potential for reliable spatial navigation assessment in older adults.
    • Endpoint error measurement in the TCT requires significant refinement for clinical application and standardization.