ArticleMonatsschrift Kinderheilkunde : Organ der Deutschen Gesellschaft fur Kinderheilkunde2021
[Corona child studies "Co-Ki": first results of a Germany-wide register on mouth and nose covering (mask) in children].
Article in Monatsschrift Kinderheilkunde : Organ der Deutschen Gesellschaft fur Kinderheilkunde, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
19 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.
- Masks and respirators for prevention of respiratory infections: a state of the science review.Clinical microbiology reviews · 2024Pooled it
- [Impact of wearing face masks in public to prevent infectious diseases on the psychosocial development in children and adolescents: a systematic review].Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz · 2021Pooled it
- Carbon dioxide rises beyond acceptable safety levels in children under nose and mouth covering: Results of an experimental measurement study in healthy children.Environmental research · 2022Trial
- Risks and benefits of face masks in children.Frontiers in pediatrics · 2026Review
- WHO'Frontiers in public health · 2025Article
- Review
- Effective volume of rebreathed air during breathing with facepieces increases with protection class and decreases with ambient airflow.PloS one · 2024Article
- The bacterial burden of worn face masks-observational research and literature review.Frontiers in public health · 2024Review
- Effect of Face Masking on Transmission of SARS-CoV-2.Advances in experimental medicine and biology · 2024Article
- [Effects of Wearing Face Masks to Prevent Infectious Diseases On Children's and Adolescents' Well-Being and Behavior: An Interview Study].Gesundheitswesen (Bundesverband der Arzte des Offentlichen Gesundheitsdienstes (Germany)) · 2023Article
- Article
- Effects of Wearing FFP2 Masks on SARS-CoV-2 Infection Rates in Classrooms.International journal of environmental research and public health · 2022Article
- How Middle and High School Students Wear Their Face Masks in Classrooms and School Buildings.Healthcare (Basel, Switzerland) · 2022Article
- COVID-19-What Price Do Children Pay? An Analysis of Economic and Social Policy Factors.International journal of environmental research and public health · 2022Review
- Unintended consequences of measures implemented in the school setting to contain the COVID-19 pandemic: a scoping review.The Cochrane database of systematic reviews · 2022Article
- To Mask or Not to Mask-Evaluation of Cognitive Performance in Children Wearing Face Masks during School Lessons (MasKids).Children (Basel, Switzerland) · 2022Article
- Spurious Asthma Presentation during COVID-19.Children (Basel, Switzerland) · 2021Article
- Experimental Assessment of Carbon Dioxide Content in Inhaled Air With or Without Face Masks in Healthy Children: A Randomized Clinical Trial.JAMA pediatrics · 2021Article
- Is a Mask That Covers the Mouth and Nose Free from Undesirable Side Effects in Everyday Use and Free of Potential Hazards?International journal of environmental research and public health · 2021Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundNarratives about complaints in children and adolescents caused by wearing a mask are accumulating. There is, to date, no registry for side effects of masks.
methodsIn the context of the www.co-ki.de multi-study complex, an online registry has been set up where parents, doctors, pedagogues and others can enter their observations. On 20 October 2020, 363 doctors were asked to make entries and to make parents and teachers aware of the registry.
resultsBy 26 October 2020, a total of 20,353 people had taken part in the survey. The group of parents alone entered data on a total of 25,930 children. The average reported wearing time of masks was 270 min per day. Of the respondents 68% reported that children complained about impairments caused by wearing the mask. Side effects included irritability (60%), headache (53%), difficulty concentrating (50%), less happiness (49%), reluctance to go to school/kindergarten (44%), malaise (42%) impaired learning (38%) and drowsiness/fatigue (37%). DISCUSSION: This world's first registry for recording the effects of wearing masks in children is dedicated to a new research question. A bias with respect to the preferential documentation of particularly severely affected children or persons who are fundamentally critical of protective measures cannot be ruled out.The frequency of use and the spectrum of symptoms registered indicate the importance of the topic and call for representative surveys, randomized controlled trials with various masks and a renewed risk-benefit assessment of mask obligation in the vulnerable group of children.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.