title: Correlation of the Voice Handicap Index-10 (VHI-10) and Voice-Related Quality of Life (V-RQOL) in patients with dysphonia.
abstract: OBJECTIVE
  This study examines the correlation between two voice-specific patient-reported outcome measures: the Voice Handicap Index-10 (VHI-10) and Voice-Related Quality of Life (V-RQOL).
  
  
  METHODS
  Retrospective chart review.
  
  
  METHODS
  Eight hundred four patients presenting to our voice clinic between May 2009 and August 2011. All patients completed the VHI-10 and V-RQOL in a single sitting.
  
  
  METHODS
  Correlation between the two scales was examined using Spearman rank analysis. Calculated VHI-10 score was derived from V-RQOL score by direct conversion equation and compared with measured VHI-10 score. Receiver Operating Characteristic (ROC) curves were derived for diagnostic groups.
  
  
  RESULTS
  Spearman correlation coefficient between the VHI-10 and V-RQOL was -0.91 (P < 0.0001). VHI-10 and V-RQOL scores were also significantly correlated among diagnostic categories. Calculated and measured VHI-10 scores were significantly different both for individuals and overall. Area under the curve (AUC) values from ROC curves were significantly different for the presbyphonia (V-RQOL AUC = 0.586 [standard error, SE ± 0.033]; VHI-10 AUC = 0.530 [SE ± 0.031]; P = 0.0014) and muscle tension dysphonia (V-RQOL AUC = 0.536 [SE ± 0.026]; VHI-10 AUC = 0.508 [SE ± 0.26]; P = 0.018) groups, with the V-RQOL showing relatively greater sensitivity.
  
  
  CONCLUSIONS
  The VHI-10 and V-RQOL are highly correlated. However, VHI-10 score cannot be calculated from V-RQOL score using the tested equation. The V-RQOL may be more sensitive than the VHI-10 in detecting the impact of presbyphonia and muscle tension dysphonia.
authors: Department of Otorhinolaryngology - Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota.
authors: Jonathan J
authors: JJ
authors: Romak
authors: Department of Otorhinolaryngology - Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota. Electronic address: dmorbelo@gmail.com.
authors: Diana M
authors: DM
authors: Orbelo
authors: Department of Otorhinolaryngology - Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota.
authors: Nicolas E
authors: NE
authors: Maragos
authors: Department of Otorhinolaryngology - Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota.
authors: Dale C
authors: DC
authors: Ekbom
mesh_terms: D000328:Adult; D000368:Aged; D019540:Area Under Curve; D004185:Disability Evaluation; D055154:Dysphonia / Q000175:diagnosis* / Q000503:physiopathology / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011788:Quality of Life; D012372:ROC Curve; D012189:Retrospective Studies; D012720:Severity of Illness Index; D014827:Vocal Cords / Q000503:physiopathology*; D014833:Voice Quality
keywords: Dysphonia; Muscle tension dysphonia; Patient-reported outcome measure; Presbyphonia; Voice Handicap Index-10; Voice-Related Quality of Life