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Dysphonia Severity Index in Typically Developing Indian Children.

Gopi Kishore Pebbili1, Juhi Kidwai2, Srushti Shabnam1

  • 1All India Institute of Speech and Hearing, Mysore, India.

Journal of Voice : Official Journal of the Voice Foundation
|February 23, 2016
PubMed
Summary

This study establishes Dysphonia Severity Index (DSI) reference values for typically developing Indian children aged 8-12. Female children showed significantly higher DSI scores than males, likely due to earlier pubertal development.

Keywords:
Dysphonia Severity Index (DSI)Highest frequencyJitter %Lowest intensityMaximum phonation time

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Area of Science:

  • Speech and Hearing Sciences
  • Pediatric Voice Assessment
  • Otolaryngology

Background:

  • Dysphonia, a voice disorder, affects vocal quality, pitch, and loudness.
  • The Dysphonia Severity Index (DSI) is a validated tool for assessing dysphonia in adults.
  • Standard DSI reference values for school-aged children are currently lacking.

Purpose of the Study:

  • To establish normative Dysphonia Severity Index (DSI) values for typically developing Indian children aged 8-12 years.
  • To investigate potential gender-based differences in DSI scores within this pediatric population.

Main Methods:

  • A cohort of 42 typically developing Indian children (8-12 years) without voice complaints was recruited.
  • The Dysphonia Severity Index (DSI) was calculated using CSL 4500 software.
  • DSI parameters included maximum phonation time, highest frequency, lowest intensity, and jitter percentage.

Main Results:

  • Average DSI scores were 2.9 (±1.23) for males and 3.8 (±1.29) for females.
  • Females exhibited significantly higher DSI scores compared to males (P=0.027).
  • Higher DSI in females may be linked to earlier pubertal maturation and associated physiological changes.

Conclusions:

  • The study provides preliminary DSI reference data for male and female Indian children.
  • These normative values can serve as a baseline for comparing DSI scores in school-aged children with dysphonia.
  • Observed gender differences highlight the need for age- and gender-specific voice assessment standards.