Otolaryngology–Head and Neck Surgery Outcomes
Voice and Speech
Measuring success with the Voice Handicap Index
When undergoing treatment for a voice disorder, patients typically attend four-to-10 voice therapy sessions lasting anywhere between 30-to-60 minutes, occurring once every one-to-two weeks (or as needed).
The Voice Handicap Index (VHI-10) is a measure of a patient’s vocal handicap perception. The index was administered to all patients at their initial evaluation and again, post-therapy, as a means of objectively assessing changes in the severity of their voice symptoms.
Scores for the VHI-10 range from zero-to-40, with higher scores indicating a greater voice-related handicap. A score greater than 11 is considered abnormal, and scores ranging from zero-to-10 are considered normal, or nearly normal.
VHI-10 scores from January 2020 to May 2022
- Mean pre-therapy VHI-10 score: 16.1
- Mean post-therapy VHI-10 score: 8.6
- Mean change of score: 7.5