ArticleThorax2023
Short-term exposure to ambient air pollution and individual emergency department visits for COVID-19: a case-crossover study in Canada.
Article in Thorax, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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
20 citing papers in PubMed, 36 citations in OpenAlex.
- Association between short-term exposure to air pollution and COVID-19: a case-crossover cohort study.BMJ open respiratory research · 2026Article
- Short-term air pollution exposure and COVID-19 pneumonia in New York City: stronger associations among individuals with pre-existing cardiovascular conditions.Journal of exposure science & environmental epidemiology · 2026Article
- Regional variations in emergency care vulnerability to summer heat.Nature communications · 2026Article
- RNAseq analysis demonstrates polarization state-dependent responses to ambient particulate matter in a particle composition-specific manner.Toxicological sciences : an official journal of the Society of Toxicology · 2026Article
- Climate resilience adaptation and psychiatric emergency services utilization during extreme heat in Boston, MA: a difference-in-differences analysis.Environment international · 2026Article
- Consideration of Cardiovascular Morbidities in the Relationship between Ambient Air Pollution Exposure and Individual-Level Adverse COVID-19 Outcomes: A Systematic Review.Current epidemiology reports · 2025Article
- A case-crossover analysis of short-term PMCommunications medicine · 2025Article
- The relationship between chronic air pollution exposure, neighborhood environmental vulnerability, and adverse COVID-19 morbidities among hospitalized New York City residents.Environment international · 2025Article
- Human Monocyte-Derived Macrophages Demonstrate Distinct Responses to Ambient Particulate Matter in a Polarization State- and Particle Seasonality-Specific Manner.Chemical research in toxicology · 2025Article
- Assessing the risks of short-term exposure to ambient air pollutants on COVID-19 hospitalizations in Tehran, Iran: a time-stratified case-crossover approach.Frontiers in public health · 2025Article
- Air Pollution in Relation to COVID-19 Morbidity and Mortality: A Large Population-Based Cohort Study in Catalonia, Spain (COVAIR-CAT).Research report (Health Effects Institute) · 2024Article
- Natural and socio-environmental factors in the transmission of COVID-19: a comprehensive analysis of epidemiology and mechanisms.BMC public health · 2024Review
- Analyzing COVID-19 and Air Pollution Effects on Pediatric Asthma Emergency Room Visits in Taiwan.Toxics · 2024Article
- Impact of short-term ambient air pollution exposure on the risk of severe COVID-19.Journal of environmental sciences (China) · 2024Article
- Short-Term Nitrogen Dioxide Exposure and Emergency Hospital Admissions for Asthma in Children: A Case-Crossover Analysis in England.Journal of asthma and allergy · 2024Article
- Diesel exhaust particles induce polarization state-dependent functional and transcriptional changes in human monocyte-derived macrophages.American journal of physiology. Lung cellular and molecular physiology · 2024Article
- Peculiar weather patterns effects on air pollution and COVID-19 spread in Tokyo metropolis.Environmental research · 2023Observational
- Long-term exposure to air pollution and COVID-19 severity: A cohort study in Greater Manchester, United Kingdom.Environmental pollution (Barking, Essex : 1987) · 2023Article
- Cumulative effects of air pollution and climate drivers on COVID-19 multiwaves in Bucharest, Romania.Process safety and environmental protection : transactions of the Institution of Chemical Engineers, Part B · 2022Article
- A review on the biological, epidemiological, and statistical relevance of COVID-19 paired with air pollution.Environmental advances · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
13 authors at 7 institutions in 4 countries.
Funding
Abstract
backgroundAmbient air pollution is thought to contribute to increased risk of COVID-19, but the evidence is controversial.
objectiveTo evaluate the associations between short-term variations in outdoor concentrations of ambient air pollution and COVID-19 emergency department (ED) visits.
methodsWe conducted a case-crossover study of 78 255 COVID-19 ED visits in Alberta and Ontario, Canada between 1 March 2020 and 31 March 2021. Daily air pollution data (ie, fine particulate matter with diameter less than 2.5 µm (PM
resultsCumulative ambient exposure over 0-3 days to PM2.5 (OR 1.010; 95% CI 1.004 to 1.015, per 6.2 µg/m
conclusionsWe found associations between short-term exposure to ambient air pollutants and COVID-19 ED visits. Exposure to air pollution may also lead to more severe COVID-19 disease.
Indexed as
Identifiers
What Socratic 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 Socratic graph.