Evidence map›Paper›PMID 33822580›Full record

ReviewACS nano2021

Review of the Breathability and Filtration Efficiency of Common Household Materials for Face Masks.

Laura H Kwong, Rob Wilson, Shailabh Kumar, Yoshika Susan Crider, Yasmin Reyes Sanchez, David Rempel, Ajay Pillarisetti

Open access · greenAbstract readReview
In one paragraph

Review in ACS nano, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
15.1field-weighted citation impact, top 1% 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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 117 citations in OpenAlex.

  1. A Review of Filtration Performance of Protective Masks.International journal of environmental research and public health · 2023
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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

7 authors at 5 institutions in 1 country.

Laura H KwongWoods Institute for the Environment, Stanford University, Stanford, California 94305, United States.ORCID 0000-0002-9776-9355
Rob WilsonN95DECON, San Francisco, California 94143, United States.
Shailabh KumarDepartment of Bioengineering, Stanford University, Stanford, California 94305, United States.ORCID 0000-0001-5383-3282
Yoshika Susan CriderDivision of Epidemiology and Biostatistics, University of California, Berkeley 94720, United States.ORCID 0000-0003-3812-6517
Yasmin Reyes SanchezWoods Institute for the Environment, Stanford University, Stanford, California 94305, United States.
David RempelDepartment of Medicine, University of California, San Francisco, California 94143, United States.
Ajay PillarisettiGangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia 30307, United States.ORCID 0000-0003-0518-2934
Palo Alto Institute · USEmory University · USStanford University · USUniversity of California, Berkeley · USUniversity of California, San Francisco · US

Funding

Pilot Project ProgramP30ES019776 · NIEHS · EMORY UNIVERSITY · PI Carmen Joseph Marsit · 2013 to 2026
$22.6M
NIEHS NIH HHS P30 ES019776
6 · The paper itself

Abstract

The World Health Organization and the United States Centers for Disease Control have recommended universal face masking by the general public to slow the spread of COVID-19. A number of recent studies have evaluated the filtration efficiency and pressure differential (an indicator of breathability) of various, widely available materials that the general public can use to make face masks at home. In this review, we summarize those studies to provide guidance for both the public to select the best materials for face masks and for future researchers to rigorously evaluate and report on mask material testing. Of the tested fabric materials and material combinations with adequate breathability, most single and multilayer combinations had a filtration efficiency of <30%. Most studies evaluating commonly available mask materials did not follow standard methods that would facilitate comparison across studies, and materials were often described with too few details to allow consumers to purchase equivalent materials to make their own masks. To improve the usability of future study results, researchers should use standard methods and report material characteristics in detail.

Indexed as

COVID-19MasksFiltrationHumansSARS-CoV-2Textilesbreathabilitycloth maskCOVID-19face maskfiltration efficiencyhomemade maskpressure differentialSARS-CoV-2

Identifiers

PMID33822580
PMCPMC8900768
OpenAlexW3141932267

What OpenQuestion holds

Textmetadata
LicenceTDM
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.