The Dysphonia Severity Index

Wuyts, Floris L.; Bodt, Marc De; Molenberghs, Geert; Remacle, Marc; Heylen, Leen; Millet, B.; Lierde, Kristiane Van; Raes, Jan; Heyning, P.H. Van de

doi:10.1044/jslhr.4303.796

Cited by 475 publications

(82 citation statements)

References 25 publications

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“…• The DSI was calculated using the following equation: DSI = 0.13 × MPT + 0.0053 × F₀-high - 0.26 × I-low - 1.18 × jitter (%) + 12.4 [10]. The parameters used for the DSI are maximum phonation time (MPT, in seconds), the highest frequency (F₀-high, in Hz), the lowest intensity (I-low, in dB SPL), and jitter (in %).…”

Section: Methodsmentioning

confidence: 99%

Early Voice Therapy in Patients with Unilateral Vocal Fold Paralysis

El-Banna

Youssef²

2014

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Objective: The purpose of this work was to study the efficacy of early voice therapy in the management of patients with unilateral vocal fold paralysis. Patients and Methods: Three groups of patients suffering from unilateral vocal fold paralysis were subjected to a protocol of voice evaluation including auditory-perceptual voice analysis, the Dysphonia Severity Index (DSI) and the 20-item Voice Problem Self-Assessment Scale (VPSS-20). Patients were also examined using video laryngostroboscopy. The early voice therapy group was enrolled in a voice therapy program for 16 sessions as soon as the patients were diagnosed; the second group of patients did not receive voice therapy during the course of their ailment. The late voice therapy group was enrolled in a voice therapy after a period of at least 6 months following the onset of vocal fold paralysis. All studied patients were reevaluated after a period of 2 months. Results: The early voice therapy group showed better outcomes regarding VPSS-20 scores, auditory-perceptual voice analysis as well as the DSI. Conclusion: Early onset of voice therapy may enhance the reduction in glottal gap and improvement of voice quality by hindering the development of faulty hyperfunctional compensatory behaviors; early voice therapy may therefore enhance the patient's quality of life.

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Section: Methodsmentioning

confidence: 99%

Early Voice Therapy in Patients with Unilateral Vocal Fold Paralysis

El-Banna

Youssef²

2014

Folia Phoniatr Logop

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“…The DSI quantitatively measures acoustic parameters, such as maximum phonation time, jitter, maximum frequency and minimum intensity that determine vocal quality, and by means of a normalized formula, a score is reported as the general status of the vocal quality (11). As commonly accepted, evaluating several parameters is more reliable than evaluating only one parameter, such as fundamental frequency, shimmer, or jitter (11,12). This index has two versions of alpha and beta (11,13).…”

Section: Introductionmentioning

confidence: 99%

“…As commonly accepted, evaluating several parameters is more reliable than evaluating only one parameter, such as fundamental frequency, shimmer, or jitter (11,12). This index has two versions of alpha and beta (11,13). The alpha version was designed in 2000 by Wuyts and colleagues; in this version, the examiner requires a software such as multi-dimensional voice program and voice range profile to execute and calculate each parameter (11).…”

Section: Introductionmentioning

confidence: 99%

“…Another advantage of this index is the strong correlation with perceptual valid tools, such as VHI, GRBAS, CAPE-V, and instrumental evaluations, such as Video Laryngostroboscopy (12,16,17). Wuyts et al also believed that the DSI is not influenced by gender, since the maximum phonation time in males is compensated by the highest frequency in the female population and the average score of the DSI in females and males are relatively similar (11,18).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Dysphonia Severity Index and its Parameters Among Individuals with Multiple Sclerosis and Healthy Subjects

et al. 2018

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Background: Concerning demyelination's process in multiple sclerosis (MS), speech changes often occur earlier than other symptoms; thus early diagnosis of these changes is necessary. According to recent studies, phonation subsystem appears with the most symptoms compared with other subsystems, especially in the initial stages. In this study, the researchers aimed at comparing these symptoms in MS patients with healthy people using dysphonia severity index (DSI) and its parameters. Methods: This study was conducted on 40 MS patients and 20 healthy individuals in Ahvaz city. The subjects were asked to phonate vowel /a/ for calculating maximum phonation time (MPT), maximum F0, jitter, minimum intensity, and DSI score with the Praat software. For statistical analysis of data, Kolmogorov-Smirnov and independent t-test were used.

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“…This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited U n c o r r e c t e d P r o o f quality, and one of these is the "dysphonia severity index" (DSI). The ability to perform a multi-parametric evaluation has altered this index to one of the most valuable clinical tools for quantitatively describing voice disorders (9). The results of the index vary between +5 (for a perfect and perceptually normal voice without dysphonia) and -5 (for a severe dysphonia).…”

Section: Introductionmentioning

confidence: 99%

Immediate Effects of Phonation into the Tube Protocol on the Dysphonia Severity Index (DSI) and Perceptual Self-Evaluation in Future Speech-Language Pathologists

et al. 2018

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Objectives: The aim of this study was to investigate the immediate effects of the protocol of phonation into tube on DSI as an objective multi-parametric approach for measuring voice quality and perceptual self-evaluation in senior students participating in clinical training to become speech language pathologists (SLPs). Methods:Eleven future SLPs (7 females and 4 males) with an average age of 22.5 ± 1 performed the protocol of phonation into tube.The immediate effects of phonation into tube exercise program were evaluated by dysphonia severity index (DSI) and self-evaluation of perceived phonatory comfort.Results: After phonation in the tube exercise program, DSI and all its parameters significantly improved. Results of the paired t-test showed that MPT (P = 0.02), F-high (P = 0.001), i-low (P < 0.001), jitter (P < 0.001), and DSI (P < 0.001) before and after phonation in the tube program significantly changed, respectively. Self-evaluation after phonation in tube exercise program showed that most participants, i.e. 7 individuals (64%), reported improved phonatory comfort. Conclusions:The results of this study suggest that phonation in tube exercise program may lead to an improvement of vocal quality and voice fatigue in future SLPs.

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The Dysphonia Severity Index

Cited by 475 publications

References 25 publications

Early Voice Therapy in Patients with Unilateral Vocal Fold Paralysis

Early Voice Therapy in Patients with Unilateral Vocal Fold Paralysis

Comparison of Dysphonia Severity Index and its Parameters Among Individuals with Multiple Sclerosis and Healthy Subjects

Immediate Effects of Phonation into the Tube Protocol on the Dysphonia Severity Index (DSI) and Perceptual Self-Evaluation in Future Speech-Language Pathologists

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