Hauerslev Laura Lily, Lindegaard Laura, Printz Trine, Wistbacka Greta Öhlund
Department of Cultural and Linguistic Sciences, University of Southern Denmark, Odense, Denmark.
Department of Cultural and Linguistic Sciences, University of Southern Denmark, Odense, Denmark.
J Voice. 2024 Aug 24. doi: 10.1016/j.jvoice.2024.07.018.
The aim was to cross-culturally adapt and validate the Vocal Fatigue Index (VFI) to Danish (DK-VFI).
Cross-sectional design.
The original American English VFI was cross-culturally adapted to Danish using a forward-backward translation procedure combined with focus group interviews. The DK-VFI was distributed to 26 patients with vocal fatigue (VF) and 103 vocally healthy controls. A matched subsample based on age and sex of the control group was included. Internal consistency was determined using Cronbach's alpha and test-retest reliability was determined using Spearman's Rho as well as Wilcoxon signed-rank tests. Validity was confirmed using the Wilcoxon rank-sum test. Sensitivity and specificity were assessed using the Receiver Operating Characteristics test and the discriminative ability was determined using the Area Under the Curve (AUC) test. The original VFI consists of three factors, and cutoff values were calculated for each separate factor in the DK-VFI.
Minor changes were made in the phrasing of specific questions in order to appropriate the VFI to the Danish language. The internal consistency for the DK-VFI was high, with a Cronbach's alpha of α = 0.95. The results showed statistically significant differences (P < 0.05) in mean scores of the DK-VFI between patients and controls. The cutoff values between patients and controls for each separate factor were ≥11.5 for factor 1, ≥2.5 for factor 2, and ≤5.5 for factor 3. The results of the AUC analysis showed that the DK-VFI has discriminative abilities of 0.94 for factor 1, 0.92 for factor 2, and 0.82 for factor 3. Analysis of test-retest reliability showed strong reliability for the patient group and acceptable reliability for the control group.
The DK-VFI is a valid and reliable tool for identifying symptoms of VF and can sensitively discriminate people with VF from vocally healthy controls.
旨在对嗓音疲劳指数（VFI）进行跨文化调适并验证其丹麦语版本（DK-VFI）。
横断面设计。
采用向前-向后翻译程序并结合焦点小组访谈，将原始的美式英语VFI跨文化调适为丹麦语。DK-VFI分发给26名嗓音疲劳（VF）患者和103名嗓音健康对照者。纳入了基于对照组年龄和性别的匹配子样本。使用Cronbach's α系数确定内部一致性，使用Spearman's Rho以及Wilcoxon符号秩检验确定重测信度。使用Wilcoxon秩和检验确认效度。使用受试者工作特征测试评估敏感性和特异性，并使用曲线下面积（AUC）测试确定判别能力。原始VFI由三个因素组成，并计算了DK-VFI中每个单独因素的临界值。
对特定问题的措辞进行了细微更改，以使VFI更适合丹麦语。DK-VFI的内部一致性较高，Cronbach's α系数为α = 0.95。结果显示，患者和对照者的DK-VFI平均得分存在统计学显著差异（P < 0.05）。各单独因素患者与对照者之间的临界值分别为：因素1≥11.5，因素2≥2.5，因素3≤5.5。AUC分析结果表明，DK-VFI对因素1的判别能力为0.94，对因素2为0.92，对因素3为0.82。重测信度分析显示患者组信度强，对照组信度可接受。
DK-VFI是识别VF症状的有效且可靠工具，能够敏感地区分VF患者与嗓音健康对照者。
