ArticleEnvironmental health perspectives2013
The air quality health index and asthma morbidity: a population-based study.
Article in Environmental health perspectives, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.
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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.
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Who cites it
33 citing papers in PubMed, 1 synthesis or guideline pooled it, 111 citations in OpenAlex.
- The effects of outdoor air pollution on the respiratory health of Canadian children: A systematic review of epidemiological studies.Canadian respiratory journalPooled it
- Increased frequency of dual-positive TH2/TH17 cells in bronchoalveolar lavage fluid characterizes a population of patients with severe asthma.The Journal of allergy and clinical immunology · 2014Trial
- A multi-pollutant air quality health index for assessing mortality risk of ischemic heart disease in Jinan, China.Scientific reports · 2026Article
- Development and two-city validation of a Temperature-Sensitive Air Quality Health Index incorporating synergistic effects of air pollution and thermal stress.Frontiers in public health · 2026Article
- Article
- Outdoor Air Pollution and Pediatric Respiratory Disease.Clinics in chest medicine · 2024Review
- Exploring the Modifying Role of GDP and Greenness on the Short Effect of Air Pollutants on Respiratory Hospitalization in Beijing.GeoHealth · 2024Article
- Respiratory Health Impacts of Outdoor Air Pollution and the Efficacy of Local Risk Communication in Quito, Ecuador.International journal of environmental research and public health · 2023Article
- Environmental risk factors and cardiovascular diseases: a comprehensive expert review.Cardiovascular research · 2022Article
- Air Quality Index and Emergency Department Visits and Hospitalizations for Childhood Asthma.Annals of the American Thoracic Society · 2022Article
- Association between exposure to particulate matter and school absences in Korean asthmatic adolescents.Annals of occupational and environmental medicine · 2022Article
- Effect of urban traffic-restriction policy on improving air quality based on system dynamics and a non-homogeneous discrete grey model.Clean technologies and environmental policy · 2022Article
- Risk and Resilience: How Is the Health of Older Adults and Immigrant People Living in Canada Impacted by Climate- and Air Pollution-Related Exposures?International journal of environmental research and public health · 2021Review
- The Effects of Asthma on the Association Between Pulmonary Function and Obesity: A 16-Year Longitudinal Study.Journal of asthma and allergy · 2021Article
- Childhood food insecurity and incident asthma: A population-based cohort study of children in Ontario, Canada.PloS one · 2021Article
- Exposure to multiple air pollutants and the incidence of coronary heart disease: A fine-scale geographic analysis.The Science of the total environment · 2020Article
- Increased Weekly Mean PMFrontiers in veterinary science · 2020Article
- Atmospheric Pollution and Hospitalization for Cardiovascular and Respiratory Diseases in the City of Manaus from 2008 to 2012.TheScientificWorldJournal · 2020Review
- Article
- Do multiple environmental factors impact four cancers in women in the contiguous United States?Environmental research · 2019Article
Corrections and comments
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Authors and funding
7 authors at 6 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundExposure to air pollution has been linked to the exacerbation of respiratory diseases. The Air Quality Health Index (AQHI), developed in Canada, is a new health risk scale for reporting air quality and advising risk reduction actions.
objectiveWe used the AQHI to estimate the impact of air quality on asthma morbidity, adjusting for potential confounders.
methodsDaily air pollutant measures were obtained from 14 regional monitoring stations in Ontario. Daily counts of asthma-attributed hospitalizations, emergency department (ED) visits, and outpatient visits were obtained from a provincial registry of 1.5 million patients with asthma. Poisson regression was used to estimate health services rate ratios (RRs) as a measure of association between the AQHI or individual pollutants and health services use. We adjusted for age, sex, season, year, and region of residence.
resultsThe AQHI values were significantly associated with increased use of asthma health services on the same day and on the 2 following days, depending on the specific outcome assessed. A 1-unit increase in the AQHI was associated with a 5.6% increase in asthma outpatient visits (RR = 1.056; 95% CI: 1.053, 1.058) and a 2.1% increase in the rate of hospitalization (RR = 1.021; 95% CI: 1.014, 1.028) on the same day and with a 1.3% increase in the rate of ED visits (RR = 1.013; 95% CI: 1.010, 1.017) after a 2-day lag.
conclusionsThe AQHI values were significantly associated with the use of asthma-related health services. Timely AQHI health risk advisories with integrated risk reduction messages may reduce morbidity associated with air pollution in patients with asthma.
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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.