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KMID : 1039220210310010094
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Journal of Korean Society of Occupational and Environmental Hygiene
2021 Volume.31 No. 1 p.94 ~ p.104
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Fit comparison of Domestic N95 Medical Masks in a Fit test
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Seo Hye-Kyung
Kwon Young-Il
Myong Jun-Pyo
Kang Byoung-Kab
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Abstract
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Objectives: A number of medical institutions have been conducting fit tests to perform seal checks on masks. This study aimed to compare the differences fit factor before and after domestic N95 mask-wearing training through a fit-test.
Methods: A survey of 59 healthcare workers was conducted regarding whether they had undergone a fit test or received training on mask-wearing. Further, the fit of two types of domestic N95 masks was measured before and after the training using a QNFT(Quantitative Fit test). The average fit factors before and after training were compared using a paired t-test. Additionally the differences in the fit test pass rate were analyzed using a McNemar test.
Results: A statistically significant difference was seen between the fit factors in the fit tests conducted before and after the training (p=0.0015), as well as in the fit of the two types of masks tested (p<0.01). Thus, an improvement in mask fitting was seen after the training, even with differently fitted masks.
Conclusions: Upon using a QNFT, a significant increase in the fit factors for N95 masks was observed after training compared with masks that were fitted as usual. This highlights the importance of training in mask-wearing, with the conclusion that training healthcare providers will improve the fit of masks.
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KEYWORD
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Domestic N95, hcws(healthcare workers), seal check, training, Quantitative Fit Test (QNFT)
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