ArticlePloS one2018
Seasonal association between ambient ozone and hospital admission for respiratory diseases in Hanoi, Vietnam.
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 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
16 citing papers in PubMed, 45 citations in OpenAlex.
- Short-term ozone exposure significantly elevates paediatric respiratory disease risk in Foshan, Southern China.BMJ open respiratory research · 2026Article
- Utilising unsupervised machine learning to predict outbreaks of respiratory tract infections in acute Irish hospitals (2016-2021).Public health in practice (Oxford, England) · 2026Article
- Short term effects of changes in air pollutant concentrations during peaks traffic hours on hospitalization for respiratory diseases.Scientific reports · 2025Article
- CTNNAL1 promotes the structural integrity of bronchial epithelial cells through the RhoA/ROCK1 pathway.Acta biochimica et biophysica Sinica · 2024Article
- Article
- Neighborhood environmental factors linked to hospitalizations of older people for viral lower respiratory tract infections in Spain: a case-crossover study.Environmental health : a global access science source · 2022Article
- Pricing air pollution: evidence from short-term exposure to air pollution on hospitalization of acute bronchitis and chronic obstructive pulmonary disease in southwestern China.International health · 2022Article
- Short-Term Effects of Low-Level Ambient Air NOInternational journal of environmental research and public health · 2022Article
- Asthma and COPD exacerbation in relation to outdoor air pollution in the metropolitan area of Berlin, Germany.Respiratory research · 2022Article
- Large spatio-temporal variations of size-resolved particulate matter and volatile organic compounds in urban area with heavy traffic.Environmental science and pollution research international · 2022Article
- Mortality benefits of reduction fine particulate matter in Vietnam, 2019.Frontiers in public health · 2022Article
- The Association Between Ambient Temperatures and Hospital Admissions Due to Respiratory Diseases in the Capital City of Vietnam.Frontiers in public health · 2022Article
- Air pollution and cardiorespiratory hospitalization, predictive modeling, and analysis using artificial intelligence techniques.Environmental science and pollution research international · 2021Article
- Impact of temperature on hospital admission for acute lower respiratory infection (ALRI) among pre-school children in Ho Chi Minh City, Vietnam.International journal of biometeorology · 2021Article
- Ozone Concentration Levels in Urban Environments-Upper Silesia Region Case Study.International journal of environmental research and public health · 2021Article
- Blueberry Extracts as a Novel Approach to Prevent Ozone-Induced Cutaneous Inflammasome Activation.Oxidative medicine and cellular longevity · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMany studies have indicated the detrimental effect of ambient ozone to respiratory health in different countries. The levels of ozone in Hanoi, Vietnam are frequently above the WHO guideline but very few studies on the effects of ambient ozone on human health have been conducted in this location. This study aimed to examine the effects of ozone on hospital admission for respiratory diseases in Hanoi, by diseases, ages and seasons.
methodsHospital admissions, air pollutants and meteorological data were collected from January 2010 to June 2014. We used generalized linear models and distributed lag linear model to assess the association. In addition to full year analysis, we conducted restricted analysis of the data for two summer (from June-August) and winter (from December-February) seasons and grouped hospital admissions by diseases and ages (all ages, children 0 to 5 years and elderly >65 years). The delayed effect of ozone was assessed using lags of up to 5 days.
resultsOzone has a stronger effect on the risk of hospital admission for respiratory diseases and wheeze-associated disorders in the winter. For respiratory diseases, children were affected by ozone more than other age groups in both winter and summer. Each increase of 10 μg/m3 of ozone is associated with an increase of 6.2% risk of admission for respiratory disease among children in the winter and 1.2% in the summer. For wheeze-associated disorders, the elderly group seemed to be more affected by ozone in full year and winter but no significant association was found between ozone and admission for wheeze-associated diseases in any age group.
conclusionsOzone is a risk factor for respiratory admission, especially amongst children under 5 years old in Hanoi, and ozone has a stronger effect in the winter than in the summer in this city.
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.