Korean Voice Catastrophization Index (K-VCI): Validation of the Voice Catastrophization Index for Koreans

The Usefulness of Multi Voice Evaluation for Measuring Voice Recovery After Endolaryngeal Phonomicrosurgery in Patients with Vocal Fold Polyps

OBJECTIVES

The purpose of this study was to the usefulness of a five-variable model predicting perceived voice severity and incorporating acoustic analysis based on cepstral analysis and self-reported questionnaires, for measuring voice recovery after endolaryngeal phonomicrosurgery in patients with vocal fold polyps.

METHODS

In this study, 72 patients with vocal fold polyps were included. Two voice evaluations, including acoustic analysis, self-reported questionnaires, and auditory perceptual assessments for each patient, were implemented before and after endolaryngeal phonomicrosurgery. Using these evaluations, we compared the mean values of the perceptual evaluation of voice, acoustic analysis parameters, self-reported questionnaires, and the five-variable model estimated severity pre- and post-endolaryngeal phonomicrosurgery.

RESULTS

Various parameters related to acoustic analysis, self-reported questionnaires, and auditory perceptual assessments were useful for measuring voice recovery after endolaryngeal phonomicrosurgery. In particular, a five-variable model incorporating spectral/cepstral analyses and self-reported questionnaires was able to effectively track voice changes after endolaryngeal phonomicrosurgery.

CONCLUSION

We verified that most of the variables and the five-variable model were useful for measuring voice recovery in patients with vocal polyps after endolaryngeal phonomicrosurgery.

The usefulness of multi voice evaluation: Development of a model for predicting a degree of dysphonia

OBJECTIVES

The purposes of this study were (1) to analyze the usefulness of self-report questionnaires, acoustic analysis, and auditory perceptual assessment for screening voice problems; and (2) to develop a new model for predicting a comprehensive voice severity using multi-assessment.

METHODS

A total of 306 voice samples were analyzed in this study (typical group, n = 72; dysphonia group, n = 234). We performed a receiver operating characteristic analysis to determine the cutoff values of auditory perceptual assessments (visual analog scale), acoustic parameters (spectral- and cepstral-based analyses), and self-report questionnaires for screening voice disorders. We also performed a stepwise multiple regression analysis to verify which combination of parameters (acoustic parameters, and self-report questionnaires) could best predict perceived voice severity.

RESULTS

We verified that most of the variables analyzed were useful for voice evaluation, and found to be useful for screening voice problems. Of these, a five-variable model was a useful to predict perceived voice severity (mean R² = .807). The five-variable model consisted of acoustic parameters based on cepstral analysis (cepstral peak prominences in connected speech and sustained vowel task, and low versus high-frequency spectral energy ratio in connected speech task) and self-report questionnaires (total score of the Voice Handicap Index, and rumination score of the Voice Catastrophization Index).

CONCLUSION

We verified that most of the variables were useful for screening dysphonia and five-variable model was a useful to predict perceived voice severity. The five-variable model could be used as an objective criterion for predicting voice severity.