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10.1001/jamanetworkopen.2021.2574 http://scihub22266oqcxt.onion/10.1001/jamanetworkopen.2021.2574 33704478!7953274!33704478     free     free     free Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       JAMA+Netw+Open 2021 ; 4 (3): e212574 Nephropedia Template TP {{tp|p=33704478|t=2021. Assessment of Use and Fit of Face Masks Among Individuals in Public During the COVID-19 Pandemic in China |pdf=|usr=}}{{33704478}} gab.com Text Assessment of Use and Fit of Face Masks Among Individuals in Public During the COVID-19 Pandemic in China JO: JAMA Netw Open http://www.kidney.de/pget.php?&tw=1&pmid=33704478 #FOAvip IMPORTANCE: Face masks are recommended to prevent transmission of coronavirus disease 2019 (COVID-19); however, there is scarce evidence on their protection efficacy and ways to improve it. OBJECTIVE: To determine the proportion of improper face mask use, the factors associated with face mask protection efficacy, and ways to improve efficacy. DESIGN, SETTING, AND PARTICIPANTS: This population-based cross-sectional study was conducted in China from July to August 2020 in 5 kinds of public places. Participants included convenience samples of individuals wearing face masks and able to taste the check solution. EXPOSURES: Demographic and socioeconomic characteristics, including sex, age, and education level; information on face mask model and the worn duration was recorded. MAIN OUTCOMES AND MEASURES: The main outcome as airtightness, assessed by detecting face-to-face mask gaps, movement of cotton fiber placed at the face mask edges, and using a qualitative fit test with a bitter solution spray. Masks were further assessed for whether sealing the upper face mask edge with an adhesive tape strip was associated with improved face mask airtightness. RESULTS: Among 6003 face mask wearers enrolled, the mean (SD) age of participants was 31.1 (13.7) years, and 3047 participants (50.8%) were female. The first qualitative fit test found air leakage in 2754 participants (45.9%; 95% CI, 44.6%-47.1%), which was mostly attributable to gaps at the upper face mask edge. After sealing the upper face mask edge with an adhesive tape strip, 69.7% (95% CI, 68.0%-71.5%) of masks that had exhibited leakage became airtight in the second qualitative fit test, and the rate of airtightness reached 96.2% (95% CI, 95.4%-96.8%) in a third qualitative fit test after new surgical face masks with tape on the upper edge were provided to those who had not converted initially. The tape was well tolerated; overall, 6 participants (1.2%) reported a rash and 24 participants (5.8%) reported significant discomfort. CONCLUSIONS AND RELEVANCE: In this study of face mask fit among participants in China, although most people used face masks in public places, compromised protection due to suboptimal airtightness was common. The simple approach of sealing the upper edge of the face mask with an adhesive tape strip was associated with substantially improved its airtightness. Twit Text FOAVip Assessment of Use and Fit of Face Masks Among Individuals in Public During the COVID-19 Pandemic in China ????JAMA Netw Open http://www.kidney.de/pget.php?&tw=1&pmid=33704478 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=33704478 #FOAvip English Wikipedia <ref>{{Cite pmid|33704478}}</ref> Assessment of Use and Fit of Face Masks Among Individuals in Public During the COVID-19 Pandemic in China #MMPMID33704478 Pan X; Li X; Kong P; Wang L; Deng R; Wen B; Xiao L; Song H; Sun Y; Zhou H; Lu J; Wang Y; Guo Q; Duo L; Sun C JAMA Netw Open 2021[Mar]; 4 (3): e212574 PMID33704478show ga IMPORTANCE: Face masks are recommended to prevent transmission of coronavirus disease 2019 (COVID-19); however, there is scarce evidence on their protection efficacy and ways to improve it. OBJECTIVE: To determine the proportion of improper face mask use, the factors associated with face mask protection efficacy, and ways to improve efficacy. DESIGN, SETTING, AND PARTICIPANTS: This population-based cross-sectional study was conducted in China from July to August 2020 in 5 kinds of public places. Participants included convenience samples of individuals wearing face masks and able to taste the check solution. EXPOSURES: Demographic and socioeconomic characteristics, including sex, age, and education level; information on face mask model and the worn duration was recorded. MAIN OUTCOMES AND MEASURES: The main outcome as airtightness, assessed by detecting face-to-face mask gaps, movement of cotton fiber placed at the face mask edges, and using a qualitative fit test with a bitter solution spray. Masks were further assessed for whether sealing the upper face mask edge with an adhesive tape strip was associated with improved face mask airtightness. RESULTS: Among 6003 face mask wearers enrolled, the mean (SD) age of participants was 31.1 (13.7) years, and 3047 participants (50.8%) were female. The first qualitative fit test found air leakage in 2754 participants (45.9%; 95% CI, 44.6%-47.1%), which was mostly attributable to gaps at the upper face mask edge. After sealing the upper face mask edge with an adhesive tape strip, 69.7% (95% CI, 68.0%-71.5%) of masks that had exhibited leakage became airtight in the second qualitative fit test, and the rate of airtightness reached 96.2% (95% CI, 95.4%-96.8%) in a third qualitative fit test after new surgical face masks with tape on the upper edge were provided to those who had not converted initially. The tape was well tolerated; overall, 6 participants (1.2%) reported a rash and 24 participants (5.8%) reported significant discomfort. CONCLUSIONS AND RELEVANCE: In this study of face mask fit among participants in China, although most people used face masks in public places, compromised protection due to suboptimal airtightness was common. The simple approach of sealing the upper edge of the face mask with an adhesive tape strip was associated with substantially improved its airtightness. |*Cotton Fiber[MESH] |*Disposable Equipment[MESH] |*Masks[MESH] |*N95 Respirators[MESH] |Adult[MESH] |COVID-19/*prevention & control/transmission[MESH] |China[MESH] |Cross-Sectional Studies[MESH] |Female[MESH] |Humans[MESH] |Male[MESH] |SARS-CoV-2[MESH]Assessment of Use and Fit of Face Masks Among Individuals in Public Du(epmc).pdf DeepDyve Pubget Overpricing