Objectives: To evaluate the reliability and validity of the Italian Voice Symptom Scale (I-VoiSS). Study Design: Cross-sectional, nonrandomized, prospective study with controls. Methods: 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. Results: 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. Conclusion: I-VoiSS is reliable, valid, responsive to changes, and recommended for clinical practice and outcome research.

Cross-Cultural Adaptation and Validation of the Italian Version of the Voice Symptom Scale (I-VoiSS) / F. Mozzanica, C. Robotti, D. Ginocchio, C. Bulgheroni, R. Lorusso, M. Behlau, A. Schindler, F. Ottaviani. - In: JOURNAL OF VOICE. - ISSN 0892-1997. - (2017). [Epub ahead of print] [10.1016/j.jvoice.2017.02.001]

Cross-Cultural Adaptation and Validation of the Italian Version of the Voice Symptom Scale (I-VoiSS)

F. Mozzanica;D. Ginocchio;A. Schindler;F. Ottaviani
2017

Abstract

Objectives: To evaluate the reliability and validity of the Italian Voice Symptom Scale (I-VoiSS). Study Design: Cross-sectional, nonrandomized, prospective study with controls. Methods: 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. Results: 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. Conclusion: I-VoiSS is reliable, valid, responsive to changes, and recommended for clinical practice and outcome research.
Dysphonia; Quality of life; Self-assessment; Voice; VoiSS; Otorhinolaryngology2734 Pathology and Forensic Medicine; 3616; LPN and LVN
Settore MED/32 - Audiologia
2-mar-2017
JOURNAL OF VOICE
http://www.elsevier.com/wps/find/journaldescription.cws_home/672710/description#description
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/485179
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