Abstract
Purpose
To study different mask types’ impact on a sinonasal quality of life.
Methods
For this observational cross-sectional study, a web-based survey was distributed via social media forums. We used the validated Hebrew version of the Sinonasal Outcome Test–22 followed by a questionnaire developed specifically for the present study, focusing on the time of the COVID-19 pandemic (Mask Sinonasal Outcome Test), and questions regarding general health issues. The participants’ mask-wearing routine was also studied.
Results
Seventy percent of 351 participants had experienced a change in their breathing during the time of the pandemic. The median total Sinonasal Outcome Test–22 score was 13, and 10% of the participants reported a significantly impaired quality of life. According to multivariate analyses, the only subject-related variables significantly associated with the reduced sinonasal quality of life were female gender, younger age, a background of chronic rhinitis and sinusitis, and the mask-wearing average daily duration. The mask sinonasal outcome test convergent validity was confirmed.
Conclusion
The majority of our survey’s responders, predominantly female and younger participants, reported reduced sinonasal quality of life in the COVID-19 pandemic period. It can be attributed to mask-wearing, especially for a prolonged time, irrespective of the existing mask type. These findings should encourage medical companies to produce more “airway-minded” personal protection equipment.
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Introduction
Due to the COVID-19 pandemic outbreak, large populations worldwide are obliged to wear face masks. This obligation is enforced outdoors, in public places, and in workplaces, depending on local policies. Consequently, many people are required to wear a mask continuously for long hours. This unusual condition has been accompanied by a shortage of personal protective equipment in many places. This shortage evoked the use of improvised masks and non-authorized production, with varied and unknown quality [1]. Using such equipment may harm the sinonasal quality of life (QoL), among other reasons, through inhalation of fabric dust entrapped in the masks and subsequent mucosal reaction [2]. This mechanism was related to the increased prevalence of rhinitis and nasal polyposis among textile workers [3, 4]. In contrast, Dror et al. have shown that both standard surgical masks and N95 respirators may improve nasal symptoms of intermittent allergic rhinitis [5]. To the best of our knowledge, the latter study is the only one on the effect of facial mask-wearing on the sinonasal QoL.
We used the validated Hebrew version of the Sinonasal Outcome Test–22 (SNOT-22) to study different mask types' impact. This questionnaire addresses various aspects directly related to specific diseases of the nose and sinuses, as well as general health [6]. Previous studies have confirmed that the SNOT-22 is valid and reliable for this purpose. It is the preferred instrument for evaluating patients with sinonasal diseases, compared to other QoL questionnaires [7, 8]. In a subsequent study, the SNOT-22 questionnaire was further broken down into three sinus-specific symptom domains (rhinologic, extranasal rhinologic, and ear/facial symptoms) and two general health-related QoL domains (psychological and sleep dysfunction) [9]. In line with this approach, the present study evaluates how facial masks affect sino-nasal QoL in people of different ages, gender, and medical backgrounds, particularly pulmonary and sino-nasal problems.
Methods
This observational cross-sectional study was approved by the Tel-Aviv University Ethics Committee (#1-0002166). A web-based survey was distributed via social media forums (i.e., Facebook, WhatsApp), and potential participants were approached using a snowball sampling method. The survey was anonymous, and responders were allowed to terminate their participation at any time. All participants provided informed consent before initiating the survey and only then completed the survey. As the COVID-19 pandemic created a unique and highly dynamic situation, it was deemed necessary to limit the time allocated for data collection to a short period. Consequently, all questionnaires were completed between September 29 to October 7, 2020. During this period, local regulations required to wear a mask on the street, at work, and while shopping. The only exceptions were outdoor sports activities and staying at home with household members only.
The survey questionnaire (Appendix 1) opened with an initial question, inquiring whether during the COVID-19 pandemic the participant had experienced a change in nasal breathing (with possible responses of “Yes”, “Maybe”, and “No”). This question was followed by two outcome scales: (a) the SNOT-22 (items 2–23, Appendix 1), and (b) a questionnaire developed specifically for the present study, with a specific focus on the time of the COVID-19 pandemic—mask sinonasal outcome test (MaskSNOT) (items 24–30, Appendix 1). Its seven questions focused on sensations that might occur when using a face mask for extended times, such as nasal itching and a need for nose-picking. Responses to these items were given on a 6-point scale, similar to the SNOT-22 and ranging from 0 = “Not a problem” to 5 = “A very severe problem”. Summative scores were computed for the whole SNOT-22 questionnaire, with Chronbach's internal consistency coefficient of α = 0.93. Cronbach’s alphas for the five sub-domains of the questionnaire were as follows: rhinologic symptoms (α = 0.85), extranasal rhinologic symptoms (α = 0.79), ear/facial symptoms (α = 0.78), psychological dysfunction (α = 0.90), and sleep dysfunction (α = 0.91). Finally, the overall score of the MaskSNOT questionnaire was calculated similarly, as a sum of its seven items (Cronbach’s α = 0.85).
The predictor measures included a question regarding general health issues: whether the participants receive continuous medical treatment due to the chronic airway problem. The participants were also asked about the preferred mask type, a number of times they changed their facial masks during the day, the average daily number of hours they were wearing a mask, and the frequency of wearing a mask in six daily life situations (0—not at all; 1—rarely; 2—sometimes; 3—often; 4—always).
Statistical analyses were performed with SPSS v.25 software. Descriptive statistics of research variables were calculated as percentages or means and standard deviations. Correlations between two continuous variables were estimated as Pearson coefficients, and correlations between dichotomous and continuous variables as point-biserial coefficients. The differences in outcomes between mask types in possible interaction with mask-wearing duration were tested using analysis of co-variance (ANCOVA). Multivariate relationships between the predictor and the outcome measures were assessed within multiple linear regression models. For each predictor, we report its unstandardized coefficient B and its standard error, and for the model as a whole—the proportion of variance of the dependent variable explained by it (R2).
Results
Descriptive statistics
Of the 351 participants, 71.5% (N = 251) were women, participants’ age ranged from 18 to 84 years (M = 47.09, SD = 17.87). The rate of chronic rhinitis and chronic sinusitis among the participants was 14.8% and 2.3%, respectively. Seventy percent of participants answered “yes”, 12% answered “no”, and 18% answered “maybe” to the question, whether during the time of the pandemic they had experienced a change in their breathing. The median total SNOT-22 score was 13, and 10% of the participants reported “significantly impaired QoL” (total SNOT-22 > 40) [10]. The distribution of the remaining research variables is presented in Table 1.
Validity of the MaskSNOT questionnaire
To establish the novel MaskSNOT scale's structural validity, we correlated its score with the scores of SNOT-22. The correlations were high: r = 0.85 with the total SNOT-22 score, and r = 0.75, 0.72, 0.68, 0.69, 0.58, and 0.46 with rhinologic symptoms, extranasal rhinologic symptoms, ear/facial symptoms, psychological dysfunction, and sleep dysfunction, respectively. Thus, the new scale's convergent validity was confirmed.
For the analysis of the mask-type effect, N95 types with and without a filter were combined because too few responders reported usage of each of these two types. No one reported wearing the “other” mask type. Analyses of co-variance of the MaskSNOT, total SNOT-22, and its subscales revealed that these outcomes were not affected by mask type or by the interaction between mask type and wearing duration. The majority change their masks once in a day or two. Mask usage was the highest in closed public places and outdoors and the lowest, as expected, at home.
Univariate analyses
As seen in Table 2, women had higher scores on the total SNOT-22 than men, on all of its subscales (especially those of psychological dysfunction and sleep dysfunction), and on the MaskSNOT. The presence of chronic rhinitis and sinusitis was related to higher levels of the total SNOT-22 score and two of its sub-scales (rhinologic and extranasal rhinologic symptoms). Rhinitis was also predictive of higher sleep dysfunction. Participants suffering from chronic pulmonary problems had higher MaskSNOT scores than others. Mask change frequency and daily use duration were positively correlated with all the total SNOT-22 score and three of its sub-scales: rhinologic, extranasal, and ear/facial symptoms. Also, usage duration was positively correlated with the MaskSNOT score. Mask-wearing in two contexts, outdoors and closed public places, correlated negatively with the total SNOT-22 score, two of its sub-scales (extranasal rhinologic and ear/facial symptoms), and the MaskSNOT (Table 2).
Multivariate analyses
As seen in Table 2, each outcome was related to more than one predictor. To estimate the unique contribution of each predictor, multiple regression analysis was performed on each outcome. In order to ensure comparability of results, each outcome was regressed on all of the predictors that were found, in univariate analyses, to be significantly correlated with at least one outcome. The resulting models are presented in Table 3. The only subject-related variables significantly associated with the reduced sinonasal QoL were female gender, younger age, a background of chronic rhinitis and sinusitis, and the mask-wearing average daily duration.
Discussion
The COVID-19 pandemic has had a global impact on human health. Aside from its immediate harm to those suffering from the disease, mandatory universal masking may have adverse effects on sino-nasal QoL and exacerbate chronic illnesses. The present study sought to assess this effect, including the differences between the mask types.
Our study cohort provides a good representation of the total population: the rates of chronic rhinitis (14.8%) and chronic sinusitis (2.3%) in our cohort correspond well with those reported in the literature [11,12]. Additionally, the percentage of our survey responders ever tested positive for COVID-19 (2.6%) was similar to that in the total Israeli population during the time the survey was conducted [13].
The MaskSNOT scale constructed for evaluating the specific effect of facial masks on the sino-nasal QoLwas found structurally valid. It also correlated well with the total SNOT-22 score and each of its clustered domains. Therefore, the MaskSNOT can serve as a valuable adjunctive to the SNOT-22 in future studies of sinonasal QoL during the time of the COVID-19 pandemic.
The vast majority of the responders (70%) reported experiencing a change in their breathing while wearing a face mask. This finding is in line with the relatively high median total SNOT-22 score (13) for the whole study cohort. In contrast, the normal SNOT-22 score in adults without sinonasal diseases is 7, according to Gillett et al. [14]. Thus, our results appear to highlight the negative impact of mask-wearing on the sinonasal QoL during the COVID-19 pandemic. Total SNOT-22, psychological and sleep dysfunction, as well as MaskSNOT scores, were higher among women compared to men. Our data are supported by previous studies dealing with the COVID-19 period and a large body of research reporting the increased prevalence of anxiety and sleep disorders among females [15,16,17,18,19]. Along with that, these gender differences can possibly reflect the more significant burden of familial responsibilities on females, particularly care for their children’s emotional, physical, and intellectual well-being during a time when schools and kindergartens were closed.
As expected, participants suffering from chronic rhinitis and sinusitis demonstrated higher SNOT-22 scores, especially on the rhinologic and extranasal rhinologic symptoms sub-scores. Nevertheless, their QoL was not further affected by mask-wearing. This observation is in agreement with the data presented by Dror et al. [5] and can be attributed to the reduced exposure to allergens when using face masks. In contrast, responders with chronic pulmonary diseases were found to suffer more from the symptoms included in the MaskSNOT. This could be attributed to increased breathing effort and rebreathing of the exhaled air. The participants' age negatively correlated with all outcome measures. This is possibly a reflection of the increased social distancing among the elderly population, allowing them to minimize the use of face masks.
The average daily duration of mask-wearing strongly correlated with MaskSNOT scores, rhinologic, and ear/facial symptoms. The latter finding can be explained by the physical pressure that masks apply on the ears and the face. Another interesting finding is the negative correlation found between all outcome parameters (especially the total SNOT-22 score, extranasal rhinologic and ear/facial clusters, and the MaskSNOT) and mask-wearing outdoors and in closed public places. Participants used masks in these circumstances more than in other ones. Air conditions in these places cannot be adjusted individually, and face masks may help create a personal, more humid and hot micro-environment.
In our study, the mask type was not found to significantly affect the checked QoL parameters. Furthermore, previous research on the antiviral efficacy of different mask types and materials has yielded contradicting and equivocal findings [20,21,22]. From this standpoint, it is unclear whether there are advantages to choosing one type of mask over another. Interestingly, the responders wore their masks less frequently during social meetings than outdoors or in closed public places. It can be potentially attributable either to mask-related communication disturbance or limited enforcement in the social meeting environment.
The multivariate analyses revealed that women exhibited reduced sinonasal QoL, especially in terms of psychological and sleep dysfunction, compared to men. This can be argued to reflect the above-mentioned female predisposition to depression, anxiety and sleep disturbances [17,18,19]. In contrast, this could be caused by the responders’ difficulty in differentiating between their baseline condition and recent changes related to the mask-use in the COVID-19 pandemic period. The latter statement could also explain the strong correlation between sinonasal QoL and background of chronic rhinitis and sinusitis and the association between the psychologic disorder outcome variable and younger age [18, 23]. The mask-wearing average daily duration was associated mostly with the rhinologic symptoms and those included in the MaskSNOT score.
Conclusion
The majority of our survey’s responders reported reduced sinonasal QoL in the COVID-19 pandemic period. Based on the results obtained using the MaskSNOT, this change in the QoL is attributable to mask-wearing, especially for a prolonged time, irrespective of the existing mask types. We believe that these findings will encourage medical companies to produce more “airway-minded” personal protection equipment.
Availability of data and material
DOI. 10.7303/syn24611029.
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AP-F: study design, data collection, and writing. OA: study design, interpretation of data, and editing. IR: data collection, analysis, and writing. RM-S: study design, data collection, and editing. EEA: data collection, analysis, and editing. AY: study design, data collection, and drafting the article.
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This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Tel-Aviv University Ethics Committee (#1-0002166).
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Informed consent was obtained from all individual participants included in the study.
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Primov-Fever, A., Amir, O., Roziner, I. et al. How face masks influence the sinonasal quality of life during the COVID-19 pandemic. Eur Arch Otorhinolaryngol 278, 4805–4811 (2021). https://doi.org/10.1007/s00405-021-06752-2
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DOI: https://doi.org/10.1007/s00405-021-06752-2