Mozzanica F, Robotti C, Ginocchio D, Bulgheroni C, Lorusso R, Behlau M, Schindler A, Ottaviani F
Department of Biochemical and Clinical Science "Luigi Sacco", University of Milan, Milan, Italy.
Department of Biochemical and Clinical Science "Luigi Sacco", University of Milan, Milan, Italy.
J Voice. 2017 Nov;31(6):773.e1-773.e10. doi: 10.1016/j.jvoice.2017.02.001. Epub 2017 Mar 3.
To evaluate the reliability and validity of the Italian Voice Symptom Scale (I-VoiSS).
Cross-sectional, nonrandomized, prospective study with controls.
The study consisted of five phases: item generation, reliability analysis, normative data generation, validity and responsiveness analysis. A group of 113 dysphonic patients was enrolled for the internal consistency analysis. Seventy-three of them completed the I-VoiSS twice, 2 weeks apart, for test-retest reliability analysis. A group of 150 vocally healthy participants completed the I-VoiSS for normative data generation. I-VoiSS scores obtained by dysphonic and vocally healthy participants were compared for validity analysis. I-VoiSS scores were correlated with those of the Italian version of the Voice Handicap Index (I-VHI) in 49 dysphonic patients for criterion validity analysis. I-VoiSS scores obtained in a group of 37 nonsmoker dysphonic patients before and after surgical treatment for vocal fold polyps were compared for responsiveness analysis. Finally, the cutoff value of the I-VoiSS was calculated.
All the enrolled participants managed to complete the I-VoiSS autonomously. Internal consistency and test-retest were satisfactory (α = 0.92 and r = 0.91). A significant difference in the I-VoiSS scores between the dysphonic and vocally healthy participants was found (p = 0.001). Positive significant correlations were found between I-VoiSS and I-VHI scores (r = 0.85). I-VoiSS scores obtained in the pretreatment condition were significantly higher than those obtained after surgery (p = 0.001). The cutoff value of I-VoiSS was 15.5.
I-VoiSS is reliable, valid, responsive to changes, and recommended for clinical practice and outcome research.
评估意大利语音症状量表（I-VoiSS）的信度和效度。
采用横断面、非随机、有对照的前瞻性研究。
该研究包括五个阶段：条目生成、信度分析、常模数据生成、效度和反应度分析。招募了113名发声障碍患者进行内部一致性分析。其中73人在相隔2周的时间内两次完成I-VoiSS，用于重测信度分析。150名嗓音健康参与者完成I-VoiSS以生成常模数据。比较发声障碍患者和嗓音健康参与者获得的I-VoiSS分数进行效度分析。在49名发声障碍患者中，将I-VoiSS分数与意大利语版嗓音障碍指数（I-VHI）的分数进行相关性分析以进行效标效度分析。比较37名非吸烟发声障碍患者在声带息肉手术治疗前后获得的I-VoiSS分数进行反应度分析。最后，计算I-VoiSS的临界值。
所有纳入的参与者均能自主完成I-VoiSS。内部一致性和重测结果令人满意（α=0.92，r=0.91）。发现发声障碍患者和嗓音健康参与者的I-VoiSS分数存在显著差异（p=0.001）。I-VoiSS与I-VHI分数之间存在显著正相关（r=0.85）。术前获得的I-VoiSS分数显著高于术后获得的分数（p=0.001）。I-VoiSS的临界值为15.5。
I-VoiSS可靠、有效、对变化有反应，推荐用于临床实践和结果研究。
