JOURNAL ARTICLE

Cross-cultural adaptation and validation of the voice-related quality of life into Persian

Negin Moradi, Nader Saki, Ozra Aghadoost, Soheila Nikakhlagh, Majid Soltani, Vita Derakhshandeh, Ehsan Naderifar, Behrooz Mahmoodi Bakhtiari, Shiva Javadipour
Journal of Voice 2014, 28 (6): 842.e1-9
25008375
The purpose of this study was to adapt and determine reliability, validity, and responsiveness of voice-related quality of life (V-RQOL) for Persian. A total of 300 patients with voice disorders participated in the study. Also, 116 people without any voice disorders volunteered to participate in the study as a control group. All participants filled in the Persian version of V-RQOL. The reliability, validity, and responsiveness were studied. Results demonstrated that the discrimination coefficient is significant for all items. The V-RQOL measure showed a strong internal consistency (Cronbach alpha coefficient = 0.88-0.91) and a good test-retest reliability (r = 0.93-0.95). Pre- and post-treatment results showed a significant responsiveness (functioning, 0.000; social-emotional, 0.001; and total, 0.000). Effect size range of 1.26-1.59 and the standardized response mean range of 1.07-1.41 were obtained for V-RQOL. It seems that the Persian version of V-RQOL is valid, reliable, and responsive to change, and this questionnaire can be used for completing voice evaluation for patients with dysphonia.

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