Department of Speech Therapy, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran.
Department of Physiotherapy, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran.
J Voice. 2022 Jan;36(1):68-75. doi: 10.1016/j.jvoice.2020.04.011. Epub 2020 May 25.
Muscle tension dysphonia (MTD) is a common voice disorder in teachers in which subjective and objective dimensions of quality of voice can be impaired. The study aimed to compare voice handicap index (VHI) and dysphonia severity index (DSI) in teachers with and without MTD as well as study correlation between them.
Cross-sectional survey.
Fifty female teachers were enrolled in the study in two different groups (1) twenty-five teachers with MTD (with mean age of 42.62 ± 3.58 years) and (2) 25 teachers without MTD (with mean age of 44.50 ± 3.49 years). All participants completed the Persian version of VHI and underwent multiparametric measurement of voice by the DSI; these subjective and objective voice measures were compared between two groups and their relation was studied.
There was significant difference in the VHI, DSI, and their components in teachers with and without MTD (P < 0.05). No significant correlation was found between the total score of VHI and DSI score in the teachers with MTD (r: 0.04, p: 0.82), although there was significant correlation between them in the teachers without MTD (r: -0.75, p: 0.001).
Teachers with MTD demonstrated higher voice handicap and lower voice quality compared to the teachers without MTD. Moreover, dysphonia interrupted relation between the results of self-perceived evaluation and multiparametric measurement of voice in the teachers with MTD in while these assessments were parallel in the healthy teachers. Further studies are recommended to transparent relation between objective and subjective voice assessments in healthy population.
肌肉紧张性发声障碍（MTD）是教师中常见的一种嗓音障碍，其嗓音质量的主观和客观维度都可能受损。本研究旨在比较有和无 MTD 的教师的嗓音障碍指数（VHI）和嗓音障碍严重指数（DSI），并研究它们之间的相关性。
横断面研究。
将 50 名女性教师纳入研究，分为两组：（1）25 名有 MTD 的教师（平均年龄 42.62 ± 3.58 岁）和（2）25 名无 MTD 的教师（平均年龄 44.50 ± 3.49 岁）。所有参与者都完成了波斯语版的 VHI，并通过 DSI 进行了多参数嗓音测量；比较了两组之间的这些主观和客观嗓音测量值，并研究了它们之间的关系。
有和无 MTD 的教师之间的 VHI、DSI 及其组成部分有显著差异（P < 0.05）。有 MTD 的教师中，VHI 总分与 DSI 评分之间没有显著相关性（r：0.04，p：0.82），而无 MTD 的教师中则存在显著相关性（r：-0.75，p：0.001）。
与无 MTD 的教师相比，有 MTD 的教师的嗓音障碍程度更高，嗓音质量更低。此外，在有 MTD 的教师中，嗓音障碍中断了自我评估结果与多参数嗓音测量之间的关系，而在健康教师中，这些评估是平行的。建议进一步研究以揭示健康人群中客观和主观嗓音评估之间的关系。
