Evidence map›Paper›PMID 33968608›Full record

ArticleJournal of transport & health2021

The face mask-touching behavior during the COVID-19 pandemic: Observational study of public transportation users in the greater Paris region: The French-mask-touch study.

Aziz Guellich, Emilie Tella, Molka Ariane, Camille Grodner, Hoai-Nam Nguyen-Chi, Emmanuel Mahé

Open access · greenAbstract read
In one paragraph

Article in Journal of transport & health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Assessing the behavior of food handlers wearing face masks and the passage of bacteria through disposable masks.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  4. Article
  5. Article
  6. Medical Face Masks Do Not Affect Acid-Base Balance Yet Might Facilitate the Transmission ofInternational journal of environmental research and public health · 2023
    Article
  7. Filter Masks during the Second Phase of SARS-CoV-2: Study on Population.International journal of environmental research and public health · 2023
    Article
  8. Legal obligation in the general population: face mask influence on endophthalmitis after intravitreal injection.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
    Article
  9. Article
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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

6 authors at 2 institutions in 1 country.

Aziz GuellichDermatology Department, Hôpital Victor Dupouy Argenteuil, Argenteuil, France.
Emilie TellaDermatology Department, Hôpital Victor Dupouy Argenteuil, Argenteuil, France.
Molka ArianeDermatology Department, Hôpital Victor Dupouy Argenteuil, Argenteuil, France.
Camille GrodnerDermatology Department, Hôpital Victor Dupouy Argenteuil, Argenteuil, France.
Hoai-Nam Nguyen-ChiDermatology Department, Hôpital Victor Dupouy Argenteuil, Argenteuil, France.
Emmanuel MahéDermatology Department, Hôpital Victor Dupouy Argenteuil, Argenteuil, France.
Centre Hospitalier Victor Dupouy · FRUniversité Paris-Est Créteil · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo limit the spread of the new coronavirus disease 2019 (COVID-19), the World Health Organization recommends the use of face mask as a part of the pandemic control strategy. It has published also "best practices" in which it advises to avoid touching the mask while wearing it. This might be challenging. The purpose of this study was to investigate the frequency of mask-touching behavior in public transportation.

methodsObservational study using data collected in real life. This survey was conducted in subways and local trains of the greater Paris region, France, between May 4th and 25th, 2020. Public Transportation users were covertly observed. Demographic characteristics, type of mask and the main activity were collected by the investigator. The duration of observation, the frequency of touching face mask, hair and the uncovered area of the face were also recorded. Frequency of mask-touching per hour was determined.

resultsOne hundred eighty two persons were observed. The median of estimated age [1st and 3rd interquartile] was 35 [30;45] years and 87 (48%) were women. One hundred forty three (79%) were wearing surgical mask. The median time of observation was 8 [4;12] minutes. During this period, 87 (48%) persons touched their mask 15 [7.5;30] times per hour of whom only two (8%) have used hydroalcoholic solution to disinfect their hands.

conclusionsMask touching is frequent and is rarely followed by hand disinfection. Actions regarding mask use should be taken to improve compliance.

Indexed as

COVID-19Face maskFace touchHand hygienePublic transportation

Identifiers

PMID33968608
PMCPMC8092492
OpenAlexW3158613719

What OpenQuestion holds

Textmetadata
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.