ArticleThe Science of the total environment2012
An analysis of asthma hospitalizations, air pollution, and weather conditions in Los Angeles County, California.
Article in The Science of the total environment, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.
What it found
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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.
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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
25 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Predictive models for personalized asthma attacks based on patient's biosignals and environmental factors: a systematic review.BMC medical informatics and decision making · 2021Pooled it
- Effects of Meteorological Factors on Hospitalizations in Adult Patients with Asthma: A Systematic Review.Canadian respiratory journal · 2019Pooled it
- Asthma hospitalisations and heat exposure in England: a case-crossover study during 2002-2019.Thorax · 2023Trial
- Seasonal viruses modify short-term air pollution effects on pediatric wheeze and asthma: a time-series study.Environmental health : a global access science source · 2026Article
- Naturally derived bioactive compounds as regulators of oxidative stress and inflammation in asthma.Chinese medicine · 2025Review
- Assessing the Impact of Non-Exhaust Emissions on the Asthmatic Airway (IONA) Protocol for a Randomised Three-Exposure Crossover Study.International journal of environmental research and public health · 2024Article
- Article
- Prediction of short-acting beta-agonist usage in patients with asthma using temporal-convolutional neural networks.JAMIA open · 2023Article
- The association between air pollutants and hospitalizations for asthma: an evidence from Chengdu, China.Annals of translational medicine · 2023Article
- The response ranges of pulmonary function and the impact criteria of weather and industrial influence on patients with asthma living in Vladivostok.Journal of environmental health science & engineering · 2020Article
- The externalities of energy production in the context of development of clean energy generation.Environmental science and pollution research international · 2020Review
- Influencing Mechanisms of Urban Heat Island on Respiratory Diseases.Iranian journal of public health · 2019Article
- Geostatistical predictive modeling for asthma and chronic obstructive pulmonary disease using socioeconomic and environmental determinants.Environmental monitoring and assessment · 2019Article
- Ozone Inhalation Attenuated the Effects of Budesonide onFrontiers in immunology · 2019Article
- Early-life exposure to PMEnvironmental health : a global access science source · 2018Article
- The influence of ocean halogen and sulfur emissions in the air quality of a coastal megacity: The case of Los Angeles.The Science of the total environment · 2018Article
- Air Pollution and Lung Function in Minority Youth with Asthma in the GALA II (Genes-Environments and Admixture in Latino Americans) and SAGE II (Study of African Americans, Asthma, Genes, and Environments) Studies.American journal of respiratory and critical care medicine · 2016Article
- Heteroscedastic CAR models for areally referenced temporal processes for analyzing California asthma hospitalization data.Journal of the Royal Statistical Society. Series C, Applied statistics · 2015Article
- The association between air pollution and weather conditions with increase in the number of admissions of asthmatic patients in emergency wards: a case study in Kermanshah.Medical journal of the Islamic Republic of Iran · 2015Article
- Inflammasome Activity in Non-Microbial Lung Inflammation.Journal of environmental immunology and toxicology · 2014Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
There is now a large body of literature supporting a linkage between exposure to air pollutants and asthma morbidity. However, the extent and significance of this relationship varies considerably between pollutants, location, scale of analysis, and analysis methods. Our primary goal is to evaluate the relationship between asthma hospitalizations, levels of ambient air pollution, and weather conditions in Los Angeles (LA) County, California, an area with a historical record of heavy air pollution. County-wide measures of carbon monoxide (CO), nitrogen dioxide (NO(2)), ozone (O(3)), particulate matter<10 μm (PM(10)), particulate matter<2.5 μm (PM(2.5)), maximum temperature, and relative humidity were collected for all months from 2001 to 2008. We then related these variables to monthly asthma hospitalization rates using Bayesian regression models with temporal random effects. We evaluated model performance using a goodness of fit criterion and predictive ability. Asthma hospitalization rates in LA County decreased between 2001 and 2008. Traffic-related pollutants, CO and NO(2), were significant and positively correlated with asthma hospitalizations. PM(2.5) also had a positive, significant association with asthma hospitalizations. PM(10), relative humidity, and maximum temperature produced mixed results, whereas O(3) was non-significant in all models. Inclusion of temporal random effects satisfies statistical model assumptions, improves model fit, and yields increased predictive accuracy and precision compared to their non-temporal counterparts. Generally, pollution levels and asthma hospitalizations decreased during the 9 year study period. Our findings also indicate that after accounting for seasonality in the data, asthma hospitalization rate has a significant positive relationship with ambient levels of CO, NO(2), and PM(2.5).
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