Evidence map›Paper›PMID 32913005›Full record

ReviewBMJ open respiratory research2020

Last-resort strategies during mask shortages: optimal design features of cloth masks and decontamination of disposable masks during the COVID-19 pandemic.

Shovon Bhattacharjee, Prateek Bahl, Abrar Ahmad Chughtai, C Raina MacIntyre

Open access · goldAbstract readReview
In one paragraph

Review in BMJ open respiratory research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
7.0field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 61 citations in OpenAlex.

  1. Pooled it
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  13. Performing Obstetric Ultrasound Examinations in the Era of COVID-19.Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine · 2021
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  15. Article
  16. Review
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  19. The Dilemma of Masks During the COVID-19 Outbreak.Risk management and healthcare policy · 2021
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 3 countries.

Shovon BhattacharjeeBiosecurity Program, Kirby Institute, UNSW Sydney, Kensington, New South Wales, Australia shovon.bhattacharjee@student.unsw.edu.au.ORCID http://orcid.org/0000-0003-1241-641X
Prateek BahlSchool of Mechanical and Manufacturing Engineering, UNSW Sydney, Kensington, New South Wales, Australia.ORCID http://orcid.org/0000-0002-0978-2286
Abrar Ahmad ChughtaiSchool of Public Health and Community Medicine, UNSW Sydney, Kensington, New South Wales, Australia.
C Raina MacIntyreBiosecurity Program, Kirby Institute, UNSW Sydney, Kensington, New South Wales, Australia.
UNSW Sydney · AUNoakhali Science and Technology University · BD

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Face masks and respirators are the most widely used intervention measures for respiratory protection. In the wake of COVID-19, in response to shortages and lack of availability of surgical masks and respirators, the use of cloth masks has become a research focus. Various fabrics have been promoted with little evidence-based foundation and without guidelines on design principles for optimal performance. In these circumstances, it is essential to understand the properties, key performance factors, filter mechanisms and evidence on cloth masks materials. The general community might also need to decontaminate and reuse disposable, single-use devices as a last resort. We present an overview of the filter materials, filter mechanisms and effectiveness, key performance factors, and hydrophobicity of the common disposable masks, as well as cloth masks. We also reviewed decontamination methods for disposable respiratory devices. As an alternative to surgical masks and respirators, we recommend a cloth mask made of at least three layers (300-350 threads per inch) and adding a nylon stocking layer over the mask for a better fit. Water-resistant fabrics (polyesters/nylon), blends of fabrics and water-absorbing fabrics (cotton) should be in the outside layer, middle layer/layers and inside layer, respectively. The information outlined here will help people to navigate their choices if facing shortages of appropriate respiratory protection during the COVID-19 pandemic.

Indexed as

Communicable Disease ControlCoronavirus InfectionsDecontaminationMasksPandemicsPneumonia, ViralBetacoronavirusCOVID-19Equipment DesignHumansMedical Waste DisposalSARS-CoV-2Medical Waste Disposalequipment evaluationsinfection control

Identifiers

PMID32913005
PMCPMC7484883
OpenAlexW3084291167

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.