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The Dysphonia Severity Index (DSI)-Normative Values. Systematic Review and Meta-Analysis
Maria Sobol1, Ewelina M Sielska-Badurek2
1Department of Biophysics and Human Physiology, Medical University of Warsaw, Poland.
Summary
The Dysphonia Severity Index (DSI) in healthy adults has a normative value of 3.05. This systematic review provides updated DSI reference values for clinical use in diagnosing voice disorders.
Area of Science:
- Otolaryngology
- Speech and Language Pathology
- Acoustic Analysis
Background:
- The Dysphonia Severity Index (DSI) is a clinical tool for diagnosing voice disorders.
- A systematic review is needed to establish the normative value of DSI.
- Previous DSI values require validation in diverse adult populations.
Purpose of the Study:
- To determine the normative value of the Dysphonia Severity Index (DSI).
- To assess DSI in subjects with normal voice quality.
- To provide updated reference values for DSI.
Main Methods:
- Systematic literature search of PubMed.
- Inclusion criteria: publication type, participant characteristics, outcome reporting.
- Meta-analysis of data from eligible studies.
Main Results:
- Fourteen articles were included in the final analysis.
- Normative DSI value is 3.05 (95% CI: 2.13-3.98).
- Data from 1330 healthy subjects aged 17.3-94 years.
Conclusions:
- The mean normative DSI value is 3.05 (CI: 2.13-3.98).
- This value is lower than previously reported.
- Updated DSI norms support its use as a diagnostic tool for adult dysphonia.
