Abstract
Rationale/Objective: The Voice Handicap Index (VHI) is a self-assessment tool that evaluates the patient’s reaction and perception to a vocal disorder. This study aimed to establish, validate and assess the reliability of the Filipino translation of the Voice Handicap Index 10 (FVHI-10). Methods: The VHI-10 was translated and adapted to the Filipino language and culture with the help of the Sentro ng Wikang Filipino- University of the Philippines Manila. A self-assessment of voice quality and FVHI-10 were performed by the patients and their GRBAS scale scoring was rated by a speech language pathologist. The Spearman’s correlation between the FVHI-10 and the self-assessment and GRBAS scale scores was obtained to test for validity. To evaluate the reliability of the FVHI-10, testing through determining internal consistency was conducted through the use of Chronbach α coefficient, inter-item correlation, item-total correlation and Cronbach α coefficient if tool item was deleted. Results: Fifty-five individuals participated in the study (29 males, 26 females, age range: 30-55 years) with the diagnosis of voice disorder based on complaints of hoarseness or dysphonia and laryngoscopic f indings. Convergent validity was confirmed with moderate to strong correlation between the FVHI-10 and self-assessment (r=-.893, p<.05) and GRBAS scale scores (r=.427, p<.05). Reliability as measured through internal consistency was confirmed (Cronbach α=.874) (average ρ<.5) (corrected item-total correlation>0.3) (average inter item correlation=.15-.85). Conclusion: The FVHI-10 was determined to be a valid and reliable instrument that can be utilized in the assessment of Filipino patients with voice disorders. Key words: Dysphonia, voice disorder, reliability, validity, voice handicap index-10, quality of life, Philippines
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