LitCovid-sentences  

PubMed:33012350 JSONTXT 19 Projects

Annnotations TAB TSV DIC JSON TextAE

Id Subject Object Predicate Lexical cue
T1 0-46 Sentence denotes Forgotten Technology in the COVID-19 Pandemic:
T2 47-113 Sentence denotes Filtration Properties of Cloth and Cloth Masks-A Narrative Review.
T3 114-296 Sentence denotes Management of the global crisis of the coronavirus disease 2019 pandemic requires detailed appraisal of evidence to support clear, actionable, and consistent public health messaging.
T4 297-376 Sentence denotes The use of cloth masks for general public use is being debated, and is in flux.
T5 377-511 Sentence denotes We searched the MEDLINE and EMBASE databases and Google for articles reporting the filtration properties of flat cloth or cloth masks.
T6 512-661 Sentence denotes We reviewed the reference lists of relevant articles to identify further articles and identified articles through social and conventional news media.
T7 662-683 Sentence denotes We found 25 articles.
T8 684-829 Sentence denotes Study of protection for the wearer used healthy volunteers, or used a manikin wearing a mask, with airflow to simulate different breathing rates.
T9 830-949 Sentence denotes Studies of protection of the environment, also known as source control, used convenience samples of healthy volunteers.
T10 950-1025 Sentence denotes The design and execution of the studies was generally rigorously described.
T11 1026-1189 Sentence denotes Many descriptions of cloth lacked the detail required for reproducibility; no study provided all the expected details of material, thread count, weave, and weight.
T12 1190-1242 Sentence denotes Some of the homemade mask designs were reproducible.
T13 1243-1573 Sentence denotes Successful masks were made of muslin at 100 threads per inch (TPI) in 3 to 4 layers (4-layer muslin or a muslin-flannel-muslin sandwich), tea towels (also known as dish towels), made using 1 layer (2 layers would be expected to be better), and good-quality cotton T-shirts in 2 layers (with a stitched edge to prevent stretching).
T14 1574-1739 Sentence denotes In flat-cloth experiments, linen tea towels, 600-TPI cotton in 2 layers, and 600-TPI cotton with 90-TPI flannel performed well but 80-TPI cotton in 2 layers did not.
T15 1740-1817 Sentence denotes We therefore recommend cotton or flannel at least 100 TPI, at least 2 layers.
T16 1818-1956 Sentence denotes More layers, 3 or 4, will provide increased filtration but there is a trade-off in that more layers increases the resistance to breathing.
T17 1957-2066 Sentence denotes Although this is not a systematic review, we included all the articles that we identified in an unbiased way.
T18 2067-2115 Sentence denotes We did not include gray literature or preprints.
T19 2116-2277 Sentence denotes A plain language summary of these data and recommendations, as well as information on making, wearing and cleaning cloth masks is available at www.clothmasks.ca.