Trial reportThorax2023
Asthma hospitalisations and heat exposure in England: a case-crossover study during 2002-2019.
Trial report in Thorax, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 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.
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
17 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Association between short-term ambient temperature variability (TV, DTR, and TCN) and asthma-related healthcare visit risk in children and adolescents: a systematic review and meta-analysis.Frontiers in public health · 2026Pooled it
- Association of humidity and precipitation with asthma: a systematic review and meta-analysis.Frontiers in allergy · 2024Pooled it
- Attributing heatwave mortality to human-induced climate change in Greece: a case-crossover and attribution analysis for 2000-2019.Environmental health : a global access science source · 2026Article
- Extreme heat and cause-specific risk of hospital admission in the adult population in England: a case time series analysis.BMJ open · 2026Article
- Review
- Article
- The Impact of Extreme Weather Events on Allergic Airway Disease.Current allergy and asthma reports · 2026Review
- Seasonal variation of pediatric asthma exacerbations and its association with asthma phenotypes.Pediatric research · 2025Article
- Scarlet fever and meteorological exposures in Jiangsu, China: a time-stratified case-crossover study.BMC public health · 2025Article
- Improved High Resolution Heat Exposure Assessment With Personal Weather Stations and Spatiotemporal Bayesian Models.GeoHealth · 2025Article
- Respiratory Health Impacts from Natural Disasters and Other Extreme Weather Events: The Role of Environmental Stressors on Asthma and Allergies.Current allergy and asthma reports · 2025Review
- Global burden of disease study on COPD in the older adult: comprehensive analysis of environmental factors and interaction effects.Frontiers in public health · 2025Article
- Asthma Inception: Epidemiologic Risk Factors and Natural History Across the Life Course.American journal of respiratory and critical care medicine · 2024Review
- Heat Exposure and Cause-Specific Hospital Admissions in Spain: A Nationwide Cross-Sectional Study.Environmental health perspectives · 2024Article
- Early Pulmonary Fibrosis-like Changes in the Setting of Heat Exposure: DNA Damage and Cell Senescence.International journal of molecular sciences · 2024Article
- Impact of ambient temperature on respiratory disease: a case-crossover study in Seoul.Respiratory research · 2024Article
- Association of asthma exacerbations with paper mulberry (Broussenetia papyrifera) pollen in Islamabad: An observational study.Journal of global health · 2023Observational
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Authors and funding
9 authors.
Funding
Abstract
backgroundPrevious studies have reported an association between warm temperature and asthma hospitalisation. They have reported different sex-related and age-related vulnerabilities; nevertheless, little is known about how this effect has changed over time and how it varies in space. This study aims to evaluate the association between asthma hospitalisation and warm temperature and investigate vulnerabilities by age, sex, time and space.
methodsWe retrieved individual-level data on summer asthma hospitalisation at high temporal (daily) and spatial (postcodes) resolutions during 2002-2019 in England from the NHS Digital. Daily mean temperature at 1 km×1 km resolution was retrieved from the UK Met Office. We focused on lag 0-3 days. We employed a case-crossover study design and fitted Bayesian hierarchical Poisson models accounting for possible confounders (rainfall, relative humidity, wind speed and national holidays).
resultsAfter accounting for confounding, we found an increase of 1.11% (95% credible interval: 0.88% to 1.34%) in the asthma hospitalisation risk for every 1°C increase in the ambient summer temperature. The effect was highest for males aged 16-64 (2.10%, 1.59% to 2.61%) and during the early years of our analysis. We also found evidence of a decreasing linear trend of the effect over time. Populations in Yorkshire and the Humber and East and West Midlands were the most vulnerable.
conclusionThis study provides evidence of an association between warm temperature and hospital admission for asthma. The effect has decreased over time with potential explanations including temporal differences in patterns of heat exposure, adaptive mechanisms, asthma management, lifestyle, comorbidities and occupation.
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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.