Evidence map›Paper›PMID 35636467›Full record

Trial reportEnvironmental research2022

Carbon dioxide rises beyond acceptable safety levels in children under nose and mouth covering: Results of an experimental measurement study in healthy children.

Harald Walach, Helmut Traindl, Juliane Prentice, Ronald Weikl, Andreas Diemer, Anna Kappes, Stefan Hockertz

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Environmental research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 3 pooled it
4.6field-weighted citation impact, top 4% 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

10 citing papers in PubMed, 3 syntheses or guidelines pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Child mask mandates for COVID-19: a systematic review.Archives of disease in childhood · 2024
    Pooled it
  3. Pooled it
  4. Trial
  5. Risks and benefits of face masks in children.Frontiers in pediatrics · 2026
    Review
  6. Review
  7. Review
  8. Article
  9. Article
  10. Inhaled COEnvironmental health insights · 2022
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 7 institutions in 3 countries.

Harald WalachChange Health Science Institute, Berlin, Germany. Electronic address: hwalac@gmail.com.
Helmut TraindlTraindl-consult, Vienna, Austria. Electronic address: traindl@traindl-consult.at.
Juliane PrenticePsychotherapeutic Practice, Müllheim, Germany. Electronic address: juliane.prentice@protonmail.com.
Ronald WeiklObstetric, Gynecological and General Practice, Passau, Germany. Electronic address: Dr.Weikl@t-online.de.
Andreas DiemerGeneral Practice, Gernsbach, Germany. Electronic address: praxisdiemer@gmx.de.
Anna KappesAnna Kappes, Psychotherapeutic Practice for Children and Youths, Müllheim, Germany. Electronic address: anna_kappes@gmx.de.
Stefan HockertzTpi Consult GmbH, Bollschweil, Germany. Electronic address: Prof.Hockertz@tpi-consult.de.
Berlin Institute of Health at Charité - Universitätsmedizin Berlin · DECenter for Children · USDerma Consult (Germany) · DEMahindra Group (India) · INOrthopädische Praxis · DEProton Motor (Germany) · DEUniversity of Passau · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nose and mouth covering (NMC) has been made compulsory for children in many countries during the Covid-19 pandemic. We wanted to determine the average CO

Indexed as

Carbon DioxideCOVID-19AdolescentChildFemaleHumansLungMalePandemicsCarbon DioxideBreathingCarbon dioxideChildrenCO(2)Covid-19Face masksRandomized study

Identifiers

PMID35636467
PMCPMC9142210
OpenAlexW4281778508

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.