کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1102284 | 953595 | 2012 | 6 صفحه PDF | دانلود رایگان |
SummaryObjectiveTo culturally adapt the Glottal Function Index (GFI) questionnaire to the Lithuanian language, and to validate it.MethodsPsychometric analyses were performed on the translated Lithuanian version of the GFI (GFI-LT) as described by the Scientific Advisory Committee of the Medical Outcomes Trust. The GFI-LT was completed by 50 voice-disordered individuals and by 50 healthy subjects of the control group. Validity, reliability, reproducibility, sensitivity, and responsiveness to clinical change of the GFI-LT were evaluated. To assess the concurrent validity of the GFI-LT, all participants also completed the Voice Handicap Index (VHI) questionnaire.ResultsThe GFI-LT showed a statistically significantly high reliability and internal consistency (Cronbach α = 0.8, r = 0.50), and moderate item-total correlation (r = 0.41–0.55). Cronbach α coefficients of the test-retest reliability were above the standard (≥0.9) for individuals testing. There was a statistically significant difference between the mean scores of the control and the voice-disordered groups (P < 0.001). The Receiver Operating Characteristic test indicated that the GFI-LT score of >3.0 was the optimal score distinguishing patients and healthy controls with the sensitivity of 88% and specificity of 84%. Statistically significant (P < 0.05) strong correlations were found between the GFI-LT and VHI scores. The GFI-LT was found to be a responsive measurement instrument to patients’ clinical statement; mean difference of the GFI-LT scores in the group of voice-disordered patients before and after surgical treatment was 5.7 (P < 0.001).ConclusionThe GFI-LT is considered to be a valid and reliable tool for self-assessment of the severity of voice disorders in Lithuanian-speaking patients.
Journal: Journal of Voice - Volume 26, Issue 2, March 2012, Pages e73–e78