Publication date: Available online 28 September 2017
Source:Journal of Voice
Author(s): Ali Dehqan, Ronald C. Scherer, Fariba Yadegari, Gholamali Dashti
ObjectivesThe Iranian Voice Quality of Life Profile (IVQLP) is a recent culture-based developed tool for assessing the quality of life of dysphonic patients. The research questions addressed here are as follows: (1) Are the correlations between IVQLP scores and values of objective voice measures? (2) Do the correlations differ across the three different voice disorders?MethodsThe subjects were divided into three groups: muscle tension dysphonia (MTD) (n = 62), benign midmembranous vocal fold lesions (n = 56), and unilateral vocal fold paralysis (UVFP) (n = 32). The study sample consisted of 91 males and 59 females. The individuals had a mean age of 46.53 ± 13.84 years. All of the participants completed the IVQLP questionnaire. The PRAAT software was used to provide acoustic analyses. The correlations between fundamental frequency (F0), perturbation analyses, harmonics-to-noise ratio, and IVQLP data of the three groups of patients were measured using Pearson's correlation.ResultsThere was a significant correlation between the total score and jitter in the MTD group. For the benign vocal fold lesion group, correlations were significant and relatively strong for numerous analyses. Again, there were numerous significant and strong correlations for the UVFP group.ConclusionsResults may indicate two interpretations. One interpretation of the results is that patients with morphological tissue changes (lesions, paralysis) appear to associate their sense of how their voice problem negatively affects their lives. A second interpretation is that there is perhaps a threshold of vocal perturbation or instability that lends itself to a patient's connection to his or her sense of how the voice affects his or her quality of life.
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