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Multivariate analysis of objective vocal function

J F Piccirillo1, C Painter, D Fuller

  • 1Department of Otolaryngology, Washington University School of Medicine, St Louis, Missouri 63110, USA.

The Annals of Otology, Rhinology, and Laryngology
|March 5, 1998
PubMed
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Researchers developed a new multidimensional voice index to assess objective voice function. The regression-based index effectively classified normal versus abnormal voice function using key parameters.

Area of Science:

  • Otolaryngology
  • Speech and Language Pathology
  • Biomedical Engineering

Background:

  • Objective voice function assessment lacks a standardized multidimensional index.
  • Existing methods often analyze voice parameters in isolation.
  • Integrating multiple objective parameters is crucial for comprehensive voice evaluation.

Purpose of the Study:

  • To identify key objective voice parameters for assessing voice function.
  • To develop and evaluate novel multidimensional voice function indices.
  • To determine the most effective index for classifying voice function.

Main Methods:

  • Evaluated 14 objective voice parameters in 97 dysphonic patients and 35 normal volunteers.
  • Developed three multidimensional voice indices: nonweighted univariate, weighted odds ratio, and weighted multivariate regression.

Related Experiment Videos

  • Compared the classification performance of the developed indices.

    • Main Results:

    • The weighted multivariate regression index and the weighted odds ratio index required only 4 key parameters: frequency range, airflow at lips, maximum phonation time, and subglottic pressure.
    • All three developed indices demonstrated satisfactory ability to classify voice function as normal or abnormal.
    • The multivariate regression index exhibited the highest performance (chi2 = 46.0).

    Conclusions:

    • A multidimensional voice index integrating key objective parameters can effectively assess voice function.
    • The weighted multivariate regression index is a promising tool for objective voice function assessment.
    • Further validation of the regression index in clinical settings is warranted.