Introduction: This study aimed to estimate the prevalence of dysphonia in patients with COVID-19. Materials and Methods: English and Persian studies that reported dysphonia in patients with COVID-19 were included. Review and case report studies were excluded. We searched Web of Science, PubMed, Google Scholar, and Scopus from January 1, 2020, to July 15, 2021. The prevalence of dysphonia was obtained by combining the results and weighing the sample sizes in the corresponding studies. Heterogeneity was evaluated using the Cochran Q test and I2 Results: Of the 1830 articles identified, 7 studies (n=1410 patients) were included in the meta- analysis. The pooled prevalence of dysphonia was 31% (%95CI: 13%-48%). The prevalence rates of dysphonia in men and women with COVID-19 were 28.2% (%95CI: 14%-46%) and 32.8% (%95CI: 22%-45%), respectively. Conclusion: Because of the design of the included studies, the reliability of the results is limited. There was notable heterogeneity in the data, not because of publication bias, but rather the small sample sizes or the heterogeneity of the COVID-19 disease. About one-third of patients with COVID-19 may have dysphonia as the only symptom. Therefore, one should even be careful in approaching those who have only dysphonia.

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Introduction: Narrative discourse is a crucial subset of discourse production that can be used to assess high levels of language processing like microlinguistic and macrolinguistic structures. Because patients with Multiple Sclerosis (MS) have more problems at high levels of language processing, this study aims to analyze narrative discourse in MS patients and compare it with healthy people. Materials and Methods: This research was a descriptive-analytic study. The study participants included 15 patients with MS and 15 healthy controls matched for age and education level. For investigating the narrative discourse, we used the Persian Narrative Discourse Test (PNDT). Data analysis was performed using descriptive statistics and the independent t-test in SPSS-24. Results: The mean values of syntactic complexity, verbal error ratio, cohesion ratio, and coherence in Persian-speaking patients with MS were 1.40, 0.42, 1.18, 2.32, respectively. Our findings indicated that regarding the macrolinguistic measures, there is a significant difference between MS patients and healthy subjects (P<0.05). However, there was no significant difference in the microlinguistic measures (P>0.05). Conclusion: This study showed that narrative discourse analysis could help identify linguistic and communication problems in MS patients. Patients with MS had pragmatic language disorder.

Introduction: The attitude of teachers is effective in improving the quality of life and academic achievement of students with stuttering. The Teachers’ Attitudes Toward Stuttering (TATS) inventory is a tool for evaluating teachers’ opinions and attitudes toward stuttering. The purpose of this study is to validate the Persian version of the TATS (TATS-Persian) and a preliminary study of the attitude of elementary teachers towards stuttering.Materials and Methods: In this cross-sectional study, which is of validation and instrumentation type, 32 teachers from elementary schools in Tehran were recruited by the available sampling method. To examine the content validity of TATS-Persian, 12 teachers were surveyed, and for the test-retest reliability of it, 12 teachers re-completed the TATS-Persian after one week. The statistical methods included the Cronbach alpha coefficient calculation and the Spearman correlation test.Results: The content validity, test-retest reliability, and internal consistency of TATS-Persian were 0.92, 0.93, 0.96, respectively. The Mean±SD scores of teacher’s attitudes were 78.09 ±11.9. Also, the teachers’ attitudes score had a significant positive correlation with the number of stuttering students experienced in their teaching history.Conclusion: The Persian version of the TATS inventory is a valid and simple tool for evaluating teachers’ attitudes toward stuttering.