Alizadeh Farhad, Dehqan Ali, Shahin Mohammad-Ali, Ghaemi Hamide, Zainaee Shahryar, Sobhani-Rad Davood
Department of Speech Pathology, Paramedical Sciences Faculty, Mashhad University of Medical Sciences, Mashhad, Iran.
Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
J Voice. 2021 Jan;35(1):160.e1-160.e6. doi: 10.1016/j.jvoice.2019.07.016. Epub 2019 Aug 5.
The aim of the present study is to validate, and assess the reliability of the Persian version of Voice Handicap Index-Throat (VHI-Tp) as a self-reported questionnaire for patients with throat problems that could make the patients' estimation of the throat discomforts possible. It is a subscale to be used independently.
This is a cross-sectional study.
During this study, the VHI-Tp was administered to120 patients with throat problems related to laryngeal discomfort (51 male and 69 female, age range: 30-60 years).The diagnosis of Voice disorder was performed by an ENT physician based on video-laryngoscopy evidences and medical examination. To assess the content validity, the questions were first given to 15 experts to comment on content applicability and relevance through a Likert scale. Eighty patients rated its importance to detect face validity. To evaluate the concurrent validity, the same 80 patients completed both the VHI-Tp as well as the Persian version of Voice Symptom Scale. The VHI-Tp total scores of the patients with diagnosed throat problem related to laryngeal discomfort and of the 40 healthy participants were compared to test the clinical validity (discriminant validity). Also, internal consistency reliability was assessed using Cronbach α coefficient. The relative reliability was calculated by asking 40 of all patients out of the 80 participants, to complete the VHI-Tp twice, with a week of interval between the first and the second times. To detect the absolute reliability, Standard Error of Measurement and Smallest Detected Change were calculated.
Discriminative validity differed significantly between patients and healthy participants. There was a significant correlation between the VHI-Tp and Voice Symptom Scale total scores (r = 0.6, P < 0.05). The internal consistency was confirmed (Cronbach α = 0.78). The test-retest reliability was excellent (intraclass correlation coefficient = 0.95).The Standard Error of Measurement and Smallest Detected Changes were acceptable (0.39 and 1.08), respectively.
The Persian version of the VHI-T was demonstrated to be a valid and reliable self-rated questionnaire for use in Persian patients with throat problem related to laryngeal discomfort.
本研究旨在验证并评估波斯语版嗓音障碍指数-喉部（VHI-Tp）作为一种针对喉部问题患者的自我报告问卷的可靠性，该问卷能够使患者对喉部不适进行评估。它是一个可独立使用的子量表。
这是一项横断面研究。
在本研究中，VHI-Tp被应用于120名与喉部不适相关的喉部问题患者（51名男性和69名女性，年龄范围：30 - 60岁）。嗓音障碍的诊断由耳鼻喉科医生根据视频喉镜检查结果和体格检查进行。为评估内容效度，首先将问题提供给15位专家，通过李克特量表对内容的适用性和相关性进行评价。80名患者对其检测表面效度的重要性进行评分。为评估同时效度，这80名患者同时完成VHI-Tp以及波斯语版嗓音症状量表。将诊断为与喉部不适相关的喉部问题患者以及40名健康参与者的VHI-Tp总分进行比较，以测试临床效度（区分效度）。此外，使用克朗巴哈α系数评估内部一致性可靠性。通过让80名参与者中的40名患者在第一次和第二次之间间隔一周的时间内完成两次VHI-Tp，计算相对可靠性。为检测绝对可靠性，计算测量标准误和最小可检测变化。
患者与健康参与者之间的区分效度存在显著差异。VHI-Tp与嗓音症状量表总分之间存在显著相关性（r = 0.6，P < 0.05）。内部一致性得到确认（克朗巴哈α = 0.78）。重测信度极佳（组内相关系数 = 0.95）。测量标准误和最小可检测变化分别是可接受的（0.39和1.08）。
波斯语版VHI-T被证明是一种有效且可靠的自评问卷，可用于患有与喉部不适相关喉部问题病的波斯语患者。
