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Published on: September 8, 2015
Thai Voice Handicap Index-10: A Validity Study
Jakkrit Chantavanich1, Sotharida Jusri1, Pariyanan Jaruchinda1
1Department of Otolaryngology, Pramongkutklao Hospital, Bangkok, Thailand.
Background:
The Voice Handicap Index (VHI) is a widely accepted tool for the self-assessment of voice severity. While comprehensive, its 30-item format can be time-consuming. The Voice Handicap Index-10 (VHI-10) provides a concise alternative, maintaining reliability and validity. This study aimed to develop and validate the Thai version of the VHI-10 and compare its performance with the full Thai VHI.
Methods:
The original Thai VHI was translated and abbreviated into the Thai VHI-10 using established translation and validation methods developed in 2004. This prospective study involved 40 patients diagnosed with voice disorders and 40 individuals without voice disorders, each completing both versions of the questionnaire. Internal consistency was assessed with Cronbach's alpha, and the correlation between the two versions was analyzed using Pearson's correlation coefficient. Sensitivity and specificity were determined via receiver operating characteristic (ROC) analysis.
Results:
The Thai VHI-10 demonstrated excellent internal consistency (Cronbach's alpha = 0.965) and a strong correlation with the full Thai VHI (r = 0.969, P < 0.001). ROC analysis identified a sensitivity and specificity of 92.5% at a cutoff score of 7. The Thai VHI-10 effectively distinguished patients from controls (P < 0.001) and required significantly less time to complete (mean: 4.2 vs. 14.3 minutes).
Conclusion:
The Thai VHI-10 serves as a practical alternative to the full Thai VHI, facilitating quicker evaluations. Further research may explore its application in broader populations and varied clinical settings.
