Reliability and validity of the Turkish version of the Vocal Fatigue Index

Şirin, Seher; Bilgen, Cem

doi:10.3906/sag-1908-105

Cited by 23 publications

(5 citation statements)

References 17 publications

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“…The Voice Handicap Index-10 evaluates psychogenic perception as well as physical and physiological evaluation. 12 The Voice Handicap Index-10 values were recorded three times: before treatment, after the completion of the sessions, and at least six months later.…”

Section: Evaluation Methodsmentioning

confidence: 99%

The efficiency of the DoctorVox voice therapy technique in conversion dysphonia and aphonia

Başer¹,

Denizoğlu²

2023

J. Laryngol. Otol.

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Objective The main purpose of this study was to retrospectively evaluate the efficiency of DoctorVox voice therapy in psychogenic dysphonia or aphonia patients, and to share the mid- to long-term results of the method. Methods The study was carried out on patients who underwent DoctorVox voice therapy for psychogenic dysphonia or aphonia between January 2015 and September 2019. The evaluation methods used were: the Voice Handicap Index-10; the grade, roughness, breathiness, asthenia and strain (‘GRBAS’) scale; and videolaryngostroboscopy recordings. Results The mean Voice Handicap Index-10 values of the patients were 30.91 ± 2.97 before treatment, 8.14 ± 3.82 after treatment, and 3.36 ± 1.78 in the final follow-up examination. The grade, roughness, breathiness, asthenia and strain scale scores were: 9 ± 0.67 pre-treatment, 0.78 ± 0.80 post-treatment, and 0.57 ± 0.64 at the final follow up. Conclusion DoctorVox voice therapy seems to be an efficient treatment method for psychogenic dysphonia or aphonia; it helps develop phonatory muscle functions, using multidimensional biofeedback mechanisms, and increases the patients’ therapy adherence.

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Section: Evaluation Methodsmentioning

confidence: 99%

The efficiency of the DoctorVox voice therapy technique in conversion dysphonia and aphonia

Başer¹,

Denizoğlu²

2023

J. Laryngol. Otol.

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“…The Turkish version of VFI was applied to all participants. [12] The VFI consists of 19 questions categorized into three factors. The first category (questions 1 to 11) evaluates vocal fatigue and avoidance, the second category (questions 12 to 16) evaluates physical discomfort associated with voicing, and the third category (questions 17 to 19) evaluates improvement of symptoms with rest.…”

Section: Methodsmentioning

confidence: 99%

“…[6][7][8][9][10] The Vocal Fatigue Index (VFI) is a patientbased scale developed by Nanjundeswaran et al, [11] in 2015 to evaluate vocal fatigue. Its validity and reliability studies have been conducted in the Turkish population by Şirin et al [12] in 2019. Although teachers are expected to have higher vocal complaints, there is no study in the Turkish population investigating the vocal fatigue and associated problems in teachers.…”

Section: Citationmentioning

confidence: 99%

Vocal fatigue in teachers and non-teachers in a Turkish population

Enver¹

2021

tr-ent

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Objectives:The aim of this study was to determine the voice use and associated vocal fatigue in teachers and to define their differences with other professional voice users and non-vocal non-professionals.Patients and Methods: Between May 2020 and October 2020, a total of 187 participants (41 males, 146 females; mean age: 32.6±10.5 years; range, 23 to 65 years) were administered the Vocal Fatigue Index (VFI) questionnaire. Of the participants, 93 were teachers and 94 were non-teachers recruited from Istanbul province of Turkey. The relationship between the VFI and sociodemographic characteristics, professional activity, talkativeness, duration of active vocal use, and active vocal complaints were analyzed. Results:The mean VFI score was 35.5±16.2. Those with a vocal complaint had significantly higher mean total VFI scores than those without any vocal complaints (p<0.001). Duration of voice use and total VFI scores were significantly higher in teachers than other professions (p<0.001 and p<0.001, respectively). The mean total VFI scores of teachers with or without vocal complaints did not significantly differ (p=0.065). Conclusion:Our study results suggest that voice disorders are more common among teachers, compared to non-professional voice users. It is important to reveal the etiology of voice problems in teachers, particularly for early diagnosis and immediate treatment.

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“…Factor 2 of the VFI-G also showed a significantly lower clinical threshold for discriminating the presence or absence of physical discomfort than other validation studies of the VFI, a finding which may indicate bias. 21,23,28 We, therefore, followed the recommendation of Nanjundeswaran et al 30 to restructure and reorder the VFI-G for further analysis. This adapted version of the VFI contains two clusters: cluster 1 represents the combined factors 1 and 2, and cluster 2 is the unchanged factor 3.…”

Section: Subjectsmentioning

confidence: 99%

The German Restructured Vocal Fatigue Index and Characteristics of Dysphonic and Vocally Healthy Populations

et al. 2023

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The Vocal Fatigue Index (VFI), a 19-item psychometric self-report questionnaire, enables individuals with vocal fatigue (VF) to be identified and their complaints to be characterized. The purpose of this study was to improve the German-language version (VFI-G) and to evaluate further vocal fatigue-related characteristics of dysphonic and control populations. Methods. The VFI-G was restructured by replacing the three factors that structured the original: (1) tiredness of voice and voice avoidance; (2) physical discomfort; and (3) improvement of symptoms with rest, with two clusters developed on the basis of the results of a factor analysis by Nanjundeswaran et al. (2019). The two new clusters are: (1) tiredness and avoidance plus physical discomfort; and (2) symptom improvement through rest. One hundred one (101) individuals with voice disorders and 100 vocally healthy controls from a previous study that crossvalidated the VFI-G participated in this study. In order to assess the validity of our newly adjusted VFI-G, independent samples t test, receiver operating characteristic curve, likelihood ratios and the Youden Index were calculated. The association of the two VF clusters with subject characteristics such as age, sex, type of voice disorder, and level of vocal usage was also analyzed using either a Pearson correlation or a one-way ANOVA for each of the two populations. Results. Significantly higher scores were obtained in voice-disordered subjects in both clusters (all P values < 0.001) than in healthy-voice subjects. The threshold for cluster 1 of the VFI-G was determined as ≥17.5 (74.3% sensitivity and 88.0% specificity). The results of cluster 2 are identical to that of factor 3 of the previous cross-validation study of the VFI-G. Most subject characteristics show no significant association with cluster 1 of the VFI-G, but cluster 2 seems to be moderately associated with age, type of voice disorder and level of vocal usage in the dysphonic population. Conclusions. The restructured VFI-G showed improved validity and can be recommended for use in the assessment of VF. Cluster 2 is also moderately associated with several vocal fatigue-related subject characteristics of the dysphonic population.

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Reliability and validity of the Turkish version of the Vocal Fatigue Index

Cited by 23 publications

References 17 publications

The efficiency of the DoctorVox voice therapy technique in conversion dysphonia and aphonia

The efficiency of the DoctorVox voice therapy technique in conversion dysphonia and aphonia

Vocal fatigue in teachers and non-teachers in a Turkish population

The German Restructured Vocal Fatigue Index and Characteristics of Dysphonic and Vocally Healthy Populations

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