Validation of the Korean Voice Perceived Present Control Scale: A Pilot Study
10.22469/jkslp.2022.33.2.103
- Author:
Jeong Min LEE
1
;
Soo Yeon JUNG
;
Bin-Na KIM
;
Han Su KIM
Author Information
1. Department of Otorhinolaryngology-Head & Neck Surgery, Ewha Womans University School of Medicine, Seoul, Korea
- Publication Type:Original Article
- From:Journal of the Korean Society of Laryngology Phoniatrics and Logopedics
2022;33(2):103-109
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Background and Objectives:The Voice Perceived Present Control scale (VPPC) has been developed to provide better insight into patients’ perceived control over their thoughts or behaviors related to voice disorders. The objective of the present study was to validate the Korean VPPC (K-VPPC) by evaluating its internal consistency and reliability.Materials and Method All items of the English VPPC were translated into Korean. Content validity was analyzed through three Delphi survey rounds by an expert panel (n=44) with active clinical and research experience in treating dysphonic patients. Twenty-three patients with a heterogeneous diagnosis of dysphonia and twenty-three gender-matched vocally normal controls (total n=46) were asked to complete the K-VPPC and the Korean Voice Handicap Index-10 (KVHI-10). Psychometric properties including internal consistency and reliability were evaluated to examine the appropriateness of cross-cultural use of K-VPPC.
Results:Cronbach’s alpha coefficient of K-VPPC was 0.89 for dysphonic patients, indicating good internal consistency in clinical samples. Furthermore, patients with dysphonia scored significantly lower on the total score of K-VPPC and higher on voice handicap than the vocally normal controls. Spearman’s correlation coefficients indicated an inverse and moderate association between the K-VPPC and all domains of KVHI-10 (Spearman’s r=-0.44– -0.68).
Conclusion:The findings of the current study indicated that the K-VPPC is a valid and reliable tool for the assessment of perceived control in Korean patients with dysphonia. Therefore, the K-VPPC could be a useful and complementary tool for the comprehensive evaluation of dysphonia, thereby improving care in Korean patients with voice disorders.
