Hakkesteegt Marieke M, Wieringa Marjan H, Brocaar Michael P, Mulder Paul G H, Feenstra Louw
Department of Otorhinolaryngology, Erasmus MC-University Medical Center Rotterdam, The Netherlands.
Folia Phoniatr Logop. 2008;60(2):86-90. doi: 10.1159/000114650. Epub 2008 Jan 31.
The purpose of this study was to investigate the interobserver variability and the test-retest variability of the Dysphonia Severity Index (DSI), a multiparametric instrument to assess voice quality.
The DSI was measured in 30 nonsmoking volunteers without voice complaints or voice disorders by two speech pathologists. The subjects were measured on 3 different days, with an interval of 1 week.
The difference in DSI between two observers (interobserver difference) was not significant. The intraclass correlation coefficient for the DSI was 0.79. The standard deviation of the difference between two duplicate measurements by different observers was 1.27.
Differences in measurements between different observers were not significant. The intraclass correlation coefficient of the DSI was 0.79, which is to be considered good. Differences in DSI within one patient need to be larger than 2.49 to be significant.
本研究旨在调查用于评估嗓音质量的多参数工具——嗓音障碍严重程度指数（DSI）的观察者间变异性和重测变异性。
两名言语病理学家对30名无嗓音主诉或嗓音障碍的非吸烟志愿者进行DSI测量。受试者在3个不同日期进行测量，间隔为1周。
两名观察者之间的DSI差异（观察者间差异）不显著。DSI的组内相关系数为0.79。不同观察者进行的两次重复测量之间差异的标准差为1.27。
不同观察者之间的测量差异不显著。DSI的组内相关系数为0.79，可认为良好。同一患者DSI的差异需大于2.49才有显著性。
