Validity and Reliability of Korean Version of the Aging Voice Index (KAVI)

Abstract

Background and Objectives：Voice disorder is recognized as a major problem because it negatively affects the elderly's social participation and quality of life. The purpose of this study was to examine the validity and reliability of Korean aging voice index (KAVI), which assesses the quality of life related to the voice of the elderly. Materials and Method：This study was conducted on 211 elderly people aged 65 years or older : 111 patients with voice disorder (mean age 69.8, range 65-80 years) and 100 nomorphonic participants (mean age 70.6, range 65-82 years). Aging voice index was translated into Korean and used and Korean voice-related quality of life (KVQOL) was conducted to verify KAVI. The validity (item validity, concurrent validity, and construct validity) and reliability (test-retest reliability and internal consistency reliability) of KAVI. Results：The item validity (ICC=0.895) and construct validity (r=0.765) showed a high correlation, respectively. And concurrent validity (r=0.748), test-retest reliability (0.851), and internal consistency reliability (α=0.832) were statistically significant in voice disorder group. In addition, there was a significant difference between the voice disorder and the nomorphonic group in AVI total score. Con-clusion：KAVI is a validated and reliable quality of life tool that will be useful for assessing the presence and effectiveness of interventions in clinical settings. KEY WORDS：Aging voiceㆍPresbyphoniaㆍKAVIㆍQuality of lifeㆍDyphonia.

Mandarin Chinese version of the Aging Voice Index

“…Cronbach's alpha values of 0.9 or above can be considered desirable for clinical assessment tools. 34,35 Cronbach's alpha values of 0.949, 0.832, 0.83, 0.954, and 0.9733 were found for the original English AVI, 21 KAVI, 22 P-AVI, 23 A-AVI, 24 and CAVI in this study, respectively. indicated that all individual items of the CAVI were well correlated with the entire scale without the items themselves (Table 2).…”

“…Cronbach's alpha values of 0.9 or above can be considered desirable for clinical assessment tools 34,35 . Cronbach's alpha values of 0.949, 0.832, 0.83, 0.954, and 0.9733 were found for the original English AVI, 21 KAVI, 22 P‐AVI, 23 A‐AVI, 24 and CAVI in this study, respectively. These values of Cronbach's alpha indicated high internal consistency, especially for the original version, Arabic version, and the CAVI.…”

“…Given such vastly different distributions of scores for the two participant groups, it was not surprising to yield a low cut‐off score of 12.0 for the CAVI. Regrettably, no ROC analysis was conducted in the validation studies for the other versions of AVI 21–24 …”

“…To date, three cross‐cultural adaptations of the AVI have been developed for non‐English‐speaking populations, including Korean, Persian, and Arabic versions 22–24 . Yet no cross‐cultural adaptations of the AVI have been developed for Mandarin speakers so far.…”

“…21 To date, three cross-cultural adaptations of the AVI have been developed for non-English-speaking populations, including Korean, Persian, and Arabic versions. [22][23][24] Yet no cross-cultural adaptations of the AVI have been developed for Mandarin speakers so far. Existing Mandarin versions of VHI-10 and V-RQOL developed for clinical applications in Taiwan were not designed nor validated specifically for older adults, either.…”