Bogaardt H C A, Hakkesteegt M M, Grolman W, Lindeboom R
Department of Phoniatrics and Otolaryngology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
J Voice. 2007 May;21(3):337-44. doi: 10.1016/j.jvoice.2005.09.007. Epub 2006 Feb 28.
The Voice Handicap Index is a tool for measuring the psychosocial consequences of voice disorders and consists of three dimensions. Previous psychometric evaluation of the VHI focused on the classic evaluation of reliability and validity, which is sample dependent. The authors used Rasch analysis to re-examine the dimensionality of the VHI and to produce item and scale statistics that are less sample dependent. In addition, they provide estimates of VHI item and person severities that are reported on the same logit unit scale, allowing a more straightforward interpretation of a VHI test score.
Dysphonic patients (N = 530), who were referred for phoniatric examination, filled out the VHI.
Rasch analysis revealed two truly uni-dimensional constructs: the 20-item psychosocial scale and the 9-item physical-functional scale. Logit item severity measures ranged from -2.1 to +2.7. Person severity scores ranged from -4.4 to + 4.4 logits. The internal consistency of the reduced scales was similar to that of the original total VHI (0.95 and 0.84). The VHI consisted of two uni-dimensional constructs. Raw test scores can be transformed into logit unit severity measures, making the VHI more suitable for evaluating the effectiveness of voice-related therapy.
嗓音障碍指数是一种用于衡量嗓音障碍心理社会后果的工具，由三个维度组成。先前对嗓音障碍指数的心理测量评估主要集中在可靠性和有效性的经典评估上，这取决于样本。作者使用拉施分析重新审视嗓音障碍指数的维度，并生成较少依赖样本的项目和量表统计数据。此外，他们提供了在相同对数单位量表上报告的嗓音障碍指数项目和个体严重程度估计值，从而使嗓音障碍指数测试分数的解释更加直接。
因嗓音疾病接受嗓音科检查的发声障碍患者（N = 530）填写了嗓音障碍指数。
拉施分析揭示了两个真正的单维结构：20项心理社会量表和9项身体功能量表。对数项目严重程度测量范围为-2.1至+?2.7。个体严重程度得分范围为-4.4至+ 4.4对数。简化后量表的内部一致性与原始总嗓音障碍指数相似（分别为0.95和0.84）。嗓音障碍指数由两个单维结构组成。原始测试分数可以转换为对数单位严重程度测量值，这使得嗓音障碍指数更适合评估嗓音相关治疗的效果。 （原文中“+2.7”处可能有误，已按原文翻译）
