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2023 APS Annual Convention · 2023

All Symptoms Are NOT Created Equal: Identifying Optimal Cut-Points in Symptom Count Measures Using Item Response Theory and Signal Detection

Washington, DC · May 2023

Poster · Methodology

  • Margaret McDonald
    St. John's University
  • Emely Sanchez
    St. John's University
  • Raquel Alicea
    St. John's University
  • Samantha Aranda
    St. John's University
  • Fiona Kurian
    St. John's University
  • William Chaplin
    St. John's University

Abstract

Binary scoring that indicates presence or absence of symptoms are psychometrically more defensible and clinically more transparent than traditional Likert scales. The challenge is determining the optimal cut-point, which may differ by symptom. The proposed research uses Graded Response models and Signal Detection analysis to identify and evaluate optimal cut-points.

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