Artikelen

The Dysphonia Severity Index Used With a Percentage Scale

Auteurs

  • Jan Raes Department of Otorhinolaryngology, University Hospital, Free University of Brussels (A,Z-KU.B.), Brussels, Belgium
  • Floris L. Wuyts Department of Otorhinolaryngology, Antwerp University Hospital, Edegem, Belgium
  • Marc de Bodt Department of Otorhinolaryngology, Antwerp University Hospital, Edegem, Belgium
  • Peter Clement Department of Otorhinolaryngology, University Hospital, Free University of Brussels (A,Z-KU.B.), Brussels, Belgium

Samenvatting

The Dysphonia Severity Index (DSI), developed by Wuyts et al. (2000a, 2000b) quantifies perceived voice quality objectively and numerically. As originally designed, the mean DSI for severely dysphonic voices equals —5, and for normal voices +5. Mathematically, this scale can be easily modified into a percentage scale where 0% corresponds to the average DSI for severely dysphonic voices, and 100% to the average DSI for normal voices. This DSI expressed as a percentage, is noted as DSI9%. The lower the patient's index, on either the original or the percentual scale, the worse is his or her voice quality. A cutting point separating normal from abnormal voices is added to the DSI scale. The practical advantages of the renewed DSIo, scale are illustrated by presenting three voice cases studied with it.

Gepubliceerd

2002-05-01

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