Validity and Reliability of Korean-Version of Voice Handicap Index and Voice-Related Quality of Life

한국어판 음성장애지수와 음성관련 삶의 질의 타당도 및 신뢰도 연구

  • 김재옥 (연세대학교 의과대학 이비인후과교실 음성언어의학연구소) ;
  • 임성은 (연세대학교 의과대학 이비인후과교실 음성언어의학연구소) ;
  • 박선영 (연세대학교 의과대학 이비인후과교실 음성언어의학연구소) ;
  • 최성희 (연세대학교 의과대학 이비인후과교실 음성언어의학연구소) ;
  • 최재남 (연세대학교 의과대학 이비인후과교실 음성언어의학연구소) ;
  • 최홍식 (연세대학교 의과대학 이비인후과교실 음성언어의학연구소)
  • Published : 2007.09.30


It is important to examine patients' subjective evaluation as well as objective measures and clinician's rating to assess voice disorders. This study aimed to evaluate validity and reliability of Korean-version of Voice Handicap Index (KVHI) and Voice-Related Quality of Life (KVQOL) with 113 adults with voice disorders and 111 normal adults. Content validity was verified by three experienced speech-language pathologists. Concurrent validity was revealed by examining the correlation among KVHI, KVQOL, and Voice Rating Scale as well as item discrimination coefficients. Total scores of KVHI and KVQOL of adults with voice disorders were significantly different from those of normal adults. Test-retest reliability and internal consistencies were significantly high in both KVHI and KVQOL. Correlations among scores of each subscale and total score were also significantly high in each tool. The study revealed that KVHI and KVQOL are suitable tools to be used in clinics and research areas in Korea, which can subjectively evaluate the effects of voice disorders on daily life as well as on quality of life.