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  • Title: Comparison of teachers' voice disorders before and during COVID-19 pandemic.
    Author: Żurek M, Jasak K, Rzepakowska A.
    Journal: Otolaryngol Pol; 2021 Dec 22; 76(2):34-41. PubMed ID: 35485225.
    Abstract:
    <b> Aim:</b> The aim of the study was to analyze the impact of the COVID-19 pandemic and the related change of the teaching mode from stationary to distance learning on the severity of voice-related ailments among teachers. </br></br> <b> Materials and methods:</b> A questionnaire survey of teachers was conducted to assess voice disorders during stationary and remote work using the Vocal Tract Discomfort (VTDs) scale and Numeric Rating Scale (NRS), and the respondents' subjective feelings were assessed. Demographic and environmental factors associated with voice work were examined. Data on sickness absence, which were obtained from the "Health Needs Maps 2020" Ministry of Health's, were also analyzed. Responses were subjected to statistical analysis. A P-value level below 0.05 was considered statistically significant. </br></br> <b>Results:</b> 128 teachers participated in the survey. The overall assessment of voice disorders using VTDs and NRS scales showed no statistically significant differences for complaints between stationary and remote work. Detailed analysis revealed more se-vere voice disorders in teachers working more than 6 months remotely (P = 0.049) and having more than 20 lessons per week (P = 0.012). Subjective assessment confirmed a significantly lower percentage of teachers reporting voice disorders when wor-king remotely compared to stationary (P = 0.043). This resulted in less sickness absence and a 40% decrease in sick leave related to voice disorders in 2020 compared to 2019. </br></br> <b>Conclusions:</b> During the remote learning period of the COVID-19 pandemic, teachers reported lower severity of voice disor-ders and this influenced the reduction of sickness absences. There were no statistically significant differences in voice complaints as assessed by VTDs and NRS scales for both teaching modes. Several factors affecting the severity of vocal tract disorders were identified - the number of class hours per week (>20) for stationary teaching and a long period of remote teaching (>6 months).
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