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Rearranging Voice Disorders: Refining the New Two-Dimensional Continuous Model.

Ofer Amir1, Rachel Blais1, Ilan Roziner1

  • 1Department of Communication Disorders, Faculty of Medical and Health Sciences, Tel-Aviv University, Tel-Aviv, Israel.

Journal of Voice : Official Journal of the Voice Foundation
|May 4, 2024
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Summary
This summary is machine-generated.

A new two-dimensional model using Organicity and Tonicity scales offers a valid and reliable way to classify voice and laryngeal pathologies, moving beyond traditional categories for better understanding.

Keywords:
CategoriesContinuous scalesLaryngeal disordersPathologyVoice disorders

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Area of Science:

  • Laryngology
  • Speech and Hearing Sciences
  • Medical Diagnostics

Background:

  • Traditional classification of voice and laryngeal pathologies relies on discrete categories.
  • A novel approach proposes arranging pathologies on two continuous scales: Organicity and Tonicity, forming a 2D plane.

Purpose of the Study:

  • To validate and assess the reliability of the proposed 2D Organicity-Tonicity model for voice/laryngeal pathologies.
  • To investigate the influence of expert background characteristics on the model's application.

Main Methods:

  • Ninety-three international experts rated 35 laryngeal and voice pathologies on continuous Organicity (nonorganic to organic) and Tonicity (hypotonic to hypertonic) scales.
  • Data analysis included Cronbach's alpha for reliability and assessment of interexpert agreement.

Main Results:

  • High reliability was found for both Organicity and Tonicity scales (Cronbach's alpha = 0.99).
  • Pathologies were distributed across all four quadrants of the 2D plane, with most in the high-Organicity, high-Tonicity quadrant.
  • Expert background characteristics did not statistically affect the ratings, indicating model consistency.

Conclusions:

  • The 2D Organicity-Tonicity model is a valid and reliable tool for classifying voice disorders.
  • This continuous model provides a comprehensive alternative to categorical systems and aids in understanding expert perceptions of laryngeal pathologies.