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lingWAVES Voice Disorder Index /
Voice Handicap Index-12

karo lingWAVES module overview

The Voice Disorder Index (VDI) or Stimmstörungsindex (SSI) has been established in Europe as a reliable tool for describing voice-dependent quality of life. The sole purpose of the VDI is to provide some preliminary information regarding the severity of voice problem as it relates to the most common activities in daily life.

Nawka developed a score by using 12 questions, called in German "Stimmstörungsindex [SSI]" or English "Voice Disorder Index [VDI]").

Comparability and Conversion of Stimmstörungsindex (SSI) and Voice Handicap Index (VHI)

lingWAVES VHI-12

Input form to transfer the patients data from the print out form to the database.

lingWAVES VHI-12

Classification view of 4 VDI results for one patient: The view shows the VDI scores over the time above and the F (functional), P (physical) and E (emotional) components at the bottom.

The Voice Handicap Index (VHI) has been established internationally as a reliable tool for describing voice-dependent quality of life. Nawka developed a new score by using 12 questions out of the VHI, called SSI (Stimmstörungsindex). The SSI has proven its role in daily clinical routine, main problem remains a lack of comparability of the SSI (range: 0 - 48) to the internationally established VHI (Voice Handicap Index) (range: 0 - 120). Aim of our study was to demonstrate that by a simple multiplication of SSI scores a statistically significant correlation with scores of the VHI can be achieved. Methods: 210 consecutive patients of the ENT University Hospital Graz were evaluated by the German version of VHI. We calculated total score of VHI as well as the score of the SSI. By multiplication of the SSI scores by 2.5 we calculated a new score, called „VHI-korr”. This score was compared with the VHI. Results: We can demonstrate that by simple multiplication of the SSI scores by 2.5 a statistically significant correlation to the VHI can be achieved (r = 0.98; p < 0.01). Conclusion:

"The SSI- based „VHI-korr” provides good international comparability of voice disorders with VHI and allows to maintain the common use of SSI in daily clinical routine."

M.  Gugatschka, J.  Rechenmacher, J.  Chibidziura, G.  Friedrich, HNO-Universitätsklinik Graz, Klinische Abteilung für Phoniatrie, Medizinische Universität Graz (Vorstand: G. Friedrich), Laryngo-Rhino-Otol 2007; 86: 785-788, DOI: 10.1055/s-2007-966686


Comparability and Conversion of Stimmstörungsindex (SSI) and Voice Handicap Index (VHI),  Friedrich et al., 2007, more ...

Reduced quality of life after thoracic surgery for unilateral vocal cord paralysis, Bigenzahn, Schneider, et al., 2006, more ...

lingWAVES Voice Disorder Index module

lingWAVES offers a free usable VDI module with 12-item. The module includes a print out function for a patient related form, an editor to transfer the patient data to a patient related database and a classification view of the results.

karo lingWAVES module overview