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BACKGROUND: During the 2009 H1N1 influenza epidemic, roughly half of survey respondents reported having worn a hygiene mask. However, most were unsatisfied with commercially available masks. OBJECTIVE: The long-term goal was to develop a comfortable, high-performance hygiene mask. This study investigated holistic attitudes of mask wearers and identified the most prominent problems as a basis for developing a new mask. METHODS: In 2009, 2012, and 2015, identical surveys were conducted among Japanese university students. The rate of mask use, intended uses, and problems reported while wearing a mask were aggregated. Co-occurrence analysis of individual respondents' data was conducted. RESULTS: For men, the most intended uses were influenza prevention in 2009 and common cold prevention in 2012 and 2015; common problems were humidity in the mask, glasses misting over, and breathing difficulty. For women, the most intended use was common cold prevention in all 3 years; common problems were humidity, glasses misting over, breathing difficulty, and makeup coming off. CONCLUSIONS: Men's attitudes in 2009 were different from those in 2012 and 2015. However, women's major attitudes were consistent in all 3 years. For both sexes, the most commonly reported problem was humidity in all 3 years. It is expected that more comfortable masks for daily use will result from improving humidity characteristics.

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Purpose Many Japanese hay fever (HF) sufferers wear a hygienic face mask to prevent pollen inhalation, but most find it very uncomfortable. The purpose of this paper is to identify the problems associated with mask wearing through repeated surveys. This information can be used in the improved design of a hygienic face mask that can be worn without discomfort by HF sufferers. Design/methodology/approach In 2009 (n=1,519), 2012 (n=2,994), and 2015 (n=3,213), repeated surveys of university students were conducted. HF sufferers were queried regarding symptoms, countermeasures, and problems associated with wearing a hygienic face mask. Holistic perspectives for each year were obtained by a co-occurrence analysis of the aggregated data. The triplet co-occurrence of specific problems was compared among the surveys using the χ2 test. Temporary and contemporary co-occurrence relationships were also determined. Findings Most Japanese university students with HF wore a hygienic face mask. In each survey, the most common problems associated with mask use were related to its thermal, hygroscopic, and air-flow properties. Contemporary problems with co-occurrence relationships were “humidity,” “breathing difficulty,” and “mist over eyeglasses” for males and, “humidity,” “breathing difficulty,” and “make-up coming off” for females. Originality/value The results of this study will contribute to improving hygienic face mask design. The co-occurrence of contemporary problems related to mask use was identified by comparing the results obtained in each year. The thermal, hygroscopic, and air flow properties of the mask cause these problems, and the air gap between the mask and the wearer’s face influences the inherent physical properties of the mask. To measure the air gap, a suitable hydrostatic pressure-balanced experimental method was applied, and the data were demonstrated experimentally.

Purpose -In Japan, one of the countermeasures used to avoid the symptoms of hay fever (HF) is a hygiene mask; however, a mask can cause discomfort. The authors believe that co-occurrence analysis, which has been widely in the sciences, will be valuable to this issue. The purpose of this paper is to identify problems associated with the use of hygiene masks and recommend improvements in their function and comfort. The goal of this study was to obtain information for the development of effective hygiene masks for HF sufferers and therefore, improve their quality of life. Design/methodology/approach -The authors conducted a survey of university students with HF (n ¼ 1,519) to identify problems with hygiene masks. Students completed self-report questionnaires and co-occurrence analyses were used to examine the data from a holistic perspective. Moreover, technical data, relative to the problems of wearing a mask were acquired experimentally using thermal, hygroscopic, and airflow properties. Findings -Among Japanese university students, hygiene masks were the most popular countermeasure against HF symptoms. In addition, it was found that wearing a mask was not influenced of the type of symptoms. Most problems were related to the masks' thermal, hygroscopic, and airflow properties. Originality/value -The paper proposed the use of co-occurrence analysis to analyze problems with hygiene masks. Most problems appear to be related to the thermal, hygroscopic, and airflow properties of the masks. Moreover, such phenomena have been experimentally demonstrated.