Department of Otorhinolaryngology and Head and Neck surgery, Erasmus MC - University Medical Center Rotterdam, The Netherlands.
J Voice. 2010 Mar;24(2):199-205. doi: 10.1016/j.jvoice.2008.06.007. Epub 2009 Jan 29.
The objective was to investigate the applicability of the Dysphonia Severity Index (DSI) and the Voice Handicap Index (VHI) in evaluating effects of intervention between groups of patients and for intrasubject differences and whether DSI and VHI are complementing measurements. Analyses of measurement data before and after intervention of 171 patients with voice disorders. The voice quality was measured objectively with the DSI. The perceived voice handicap was measured with the VHI. Three groups of patients were used: patients who had voice therapy, phonosurgery, or no intervention. DSI and VHI improved significantly after intervention in the voice therapy and the surgery group (median difference DSI 1.19 and 3.03, VHI -8 and -26, respectively). The intrasubject results were analyzed based on the test-retest variability of DSI and VHI. Significant better DSI and VHI scores after intervention were found in, respectively, 22% and 38% of the patients with voice therapy, and 56% and 78% of the patients with surgery. In the no intervention group, this was 11% and 12%. In 37% of the patients, the differences before and after intervention in DSI and VHI were in discordance. The DSI and VHI are able to show significant differences after intervention for voice disorders between groups of patients. The DSI and VHI can be used to determine a significant intrasubject result of intervention. The DSI and VHI measure each different aspects of the voice and are complementing measurements. The DSI is therefore applicable in clinical practice for objective evaluation of voice quality and the VHI for subjective evaluation of the perceived handicap by the patient self.
目的是研究 Dysphonia Severity Index（DSI）和 Voice Handicap Index（VHI）在评估患者组之间干预效果、评估个体内差异方面的适用性，以及 DSI 和 VHI 是否互为补充的测量方法。对 171 名嗓音障碍患者进行干预前后的测量数据进行分析。使用 DSI 对嗓音质量进行客观测量，使用 VHI 对感知到的嗓音障碍进行测量。使用三组患者：接受嗓音治疗、语音手术或无干预的患者。嗓音治疗和手术组的 DSI 和 VHI 在干预后显著改善（DSI 中位数差异分别为 1.19 和 3.03，VHI 分别为-8 和-26）。基于 DSI 和 VHI 的测试-重测变异性分析个体内结果。嗓音治疗患者中分别有 22%和 38%，手术患者中分别有 56%和 78%，在干预后 DSI 和 VHI 评分显著改善。在无干预组中，这一比例分别为 11%和 12%。在 37%的患者中，DSI 和 VHI 干预前后的差异不一致。DSI 和 VHI 可用于显示患者组之间嗓音障碍的干预后组间差异。DSI 和 VHI 可用于确定干预后个体内差异的显著结果。DSI 和 VHI 测量声音的不同方面，互为补充的测量方法。因此，DSI 适用于临床实践，用于客观评估嗓音质量，VHI 适用于患者自我感知的主观评估嗓音障碍。
