Reliability and validity of the Turkish version of the Voice Handicap Index

Abstract

Objectives: We investigated the reliability and validity of the Turkish version of the Voice Handicap Index VHI , and developed a short VHI form that would be more practical. Patients and Methods: The original VHI was translated to Turkish by 10 otolaryngologists, then it was translated back to English by a linguist, and the final text was prepared by the evaluation committee composed of three members. The translated version was administered to a group of 220 subjects twice with 7-14 days intervals. Based on the responses, statistical analyses were performed to assess its reliability and validity. Results: Internal consistency reliability was found to be highly significant Cronbach’s alpha=0.97 . Test-retest correlation coefficient was 0.93 for the total score. The factor analysis yielded three factors explaining 64.8% of the total variance. The corrected item-total correlation coefficients ranged from 0.50 to 0.80. The 10 most robust VHI items, namely, E7, E9, P10, F11, F12, E15, F16, P18, P20 and E29, were selected using the corrected itemtotal correlation coefficients, and a shortened form of the Turkish VHI was developed. Conclusion: As some items are thought to be contentious in the Turkish VHI, the short form of the Turkish VHI is more suitable for use in clinics.

Keywords

• Questionnaires, severity of illness index, voice, voice disorders/diagnosis, voice quality

Ses Handikap Endeksi Voice Handicap Index Türkçe versiyonunun güvenilirliği ve geçerliliği

Abstract

Amaç: Ses Handikap Endeksi SHE Türkçe versiyonunun güvenilirliği ve geçerliliği araştırıldı, uygulama kolaylığı sağlayacak kısa bir SHE versiyonu geliştirildi.Hastalar ve Yöntemler: Orijinal Voice Handicap Index 10 KBB uzmanı tarafından Türkçeye çevrildi, daha sonra bir dilbilimci tarafından İngilizceye geri çevrildi, son olarak üç kişiden oluşan değerlendirme komisyonu tarafından çeviri metnine son şekli verildi. Türkçeye çevrilen anket 220 denekten oluşan bir gruba 7-14 gün arayla iki kez uygulandı; deneklerin verdikleri yanıtlara göre güvenilirlik ve geçerlilik analizleri yapıldı.Bulgular: İç tutarlılık güvenilirliği ileri derecede anlamlı bulundu Cronbach alfa=0.97 . Test-tekrar test korelasyon katsayısı toplam skor için 0.93 bulundu. Faktör analizi sonucunda toplam varyansın %64.8’ini açıklayan üç faktör elde edildi. Düzeltilmiş maddetoplam korelasyon katsayıları 0.50-0.80 arasında değişiyordu. Düzeltilmiş madde-toplam korelasyon katsayılarına göre en güçlü 10 madde E7, E9, Fi10, F11, F12, E15, F16, Fi18, Fi20 ve E29 seçilerek kısa versiyon SHE geliştirildi.Sonuç: Ses Handikap Endeksi Türkçe versiyonunda bazı maddelerin sorunlu olması nedeniyle, kliniklerde kısa versiyon Türkçe SHE’nin kullanılması daha uygundur

Keywords

• Anket, hastalık ciddiyet indeksi, ses, ses hastalıkları/tanı, ses kalitesi

References

1. Jacobson BH, Johnson A, Grywalski C, Silbergleit A, Jacobson G, Benninger MS, et al. The Voice Handicap Index (VHI) development and validation. Am J Speech Lang Pathol 1997;6:66-70.
2. Hogikyan ND, Sethuraman G. Validation of an instru- ment to measure voice-related quality of life (V-RQOL). J Voice 1999;13:557-69.
3. Deary IJ, Wilson JA, Carding PN, MacKenzie K. VoiSS: a patient-derived Voice Symptom Scale. J Psychosom Res 2003;54:483-9.
4. Ma EP, Yiu EM. Voice activity and participation pro- file: assessing the impact of voice disorders on daily activities. J Speech Lang Hear Res 2001;44:511-24.
5. Carding PN, Horsley IA, Docherty GJ. A study of the effectiveness of voice therapy in the treatment of 45 patients with nonorganic dysphonia. J Voice 1999; 13:72-104.
6. Amir O, Ashkenazi O, Leibovitzh T, Michael O, Tavor Y, Wolf M. Applying the Voice Handicap Index (VHI) to dysphonic and nondysphonic Hebrew speakers. J Voice 2006;20:318-24.
7. Guimaraes I, Abberton E. An investigation of the Voice Handicap Index with speakers of Portuguese: prelimi- nary data. J Voice 2004;18:71-82.
8. Hakkesteegt MM, Wieringa MH, Gerritsma EJ, Feenstra L. Reproducibility of the Dutch version of the Voice Handicap Index. Folia Phoniatr Logop 2006; 58:132-8.

9. Hsiung MW, Lu P, Kang BH, Wang HW. Measurement and validation of the voice handicap index in voice- disordered patients in Taiwan. J Laryngol Otol 2003;117: 478-81.
10. Nawka T, Wiesmann U, Gonnermann U. Validierung des Voice Handicap Index (VHI) in der deutschen Fassung. HNO 2003;51:921-30.
11. Woisard V, Bodin S, Puech M. The Voice Handicap Index: impact of the translation in French on the vali- dation. Rev Laryngol Otol Rhinol 2004;125:307-12.
12. Rosen CA, Lee AS, Osborne J, Zullo T, Murry T. Development and validation of the voice handicap index-10. Laryngoscope 2004;114:1549-56.
13. Doğan M. Profesyonel ses kullanıcılarının seslerinin değerlendirilmesinde sübjektif testlerin yeri ve önemi. KBB-Forum 2004;3:35-41.
14. Kandogan T, Sanal A. Voice Handicap Index (VHI) in partial laryngectomy patients. KBB-Forum 2005;4:15-7.
15. Zur KB, Cotton S, Kelchner L, Baker S, Weinrich B, Lee L. Pediatric voice handicap index (pVHI): a new tool for evaluating pediatric dysphonia. Int J Pediatr Otorhinolaryngol 2007;71:77-82.
16. Amir O, Tavor Y, Leibovitzh T, Ashkenazi O, Michael O, Primov-Fever A, et al. Evaluating the validity of the Voice Handicap Index-10 (VHI-10) among Hebrew speakers. Otolaryngol Head Neck Surg 2006;135:603-7.
17. Lam PK, Chan KM, Ho WK, Kwong E, Yiu EM, Wei WI. Cross-cultural adaptation and validation of the Chinese Voice Handicap Index-10. Laryngoscope 2006;116:1192-8.
18. Deary IJ, Webb A, Mackenzie K, Wilson JA, Carding PN. Short, self-report voice symptom scales: psycho- metric characteristics of the voice handicap index-10 and the vocal performance questionnaire. Otolaryngol Head Neck Surg 2004;131:232-5.
19. Portone CR, Hapner ER, McGregor L, Otto K, Johns MM 3rd. Correlation of the Voice Handicap Index (VHI) and the Voice-Related Quality of Life Measure (V-RQOL). J Voice 2007;21:723-7.
20. Wilson JA, Webb A, Carding PN, Steen IN, MacKenzie K, Deary IJ. The Voice Symptom Scale (VoiSS) and the Vocal Handicap Index (VHI): a comparison of struc- ture and content. Clin Otolaryngol Allied Sci 2004; 29:169-74.