Trial reportIndoor air2014
Home interventions are effective at decreasing indoor nitrogen dioxide concentrations.
Trial report in Indoor air, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.
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
32 citing papers in PubMed, 1 synthesis or guideline pooled it, 68 citations in OpenAlex.
- Indoor Exposure to Selected Air Pollutants in the Home Environment: A Systematic Review.International journal of environmental research and public health · 2020Pooled it
- Measured air quality impacts after teaching parents about cooking ventilation with a video: a pilot study.Journal of exposure science & environmental epidemiology · 2025Trial
- Assessing the feasibility of indoor air quality monitoring in low-income housing among Black adults with uncontrolled asthma in New York City.BMC public health · 2026Article
- Household energy use and health in low-income and middle-income countries.The Lancet. Global health · 2026Review
- Air Pollution and Cardiovascular Risks in Testicular Cancer Survivors: An Exploratory Case-Crossover Study.Journal of adolescent and young adult oncology · 2026Article
- Article
- Associations between residential fossil fuel combustion and indoor concentrations of nitrogen dioxide, carbon monoxide, and aldehydes in Canadian homes.Journal of exposure science & environmental epidemiology · 2025Article
- Article
- Determinants of Indoor NOToxics · 2024Article
- The impact of indoor air pollution on children's health and well-being: the experts' consensus.Italian journal of pediatrics · 2024Article
- Article
- Indoor Air Sources of Outdoor Air Pollution: Health Consequences, Policy, and Recommendations: An Official American Thoracic Society Workshop Report.Annals of the American Thoracic Society · 2024Article
- Exposure to Nitrogen Dioxide and Fine Particulate Matter When Cooking with Electricity Compared to Gas, a Randomized Crossover Study in Quito, Ecuador.Environmental health perspectives · 2024Article
- Gas Stoves and Respiratory Health: Decades of Data, but Not Enough Progress.Annals of the American Thoracic Society · 2023Article
- Cooking with Natural Gas: Just the Facts, Please.American journal of respiratory and critical care medicine · 2023Article
- Effective options for addressing air quality- related environmental public health burdens in Saudi Arabia.Heliyon · 2022Review
- Indoor air pollution exposure is associated with greater morbidity in cystic fibrosis.Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society · 2022Article
- The Efficacy of the Dyson Air Purifier in Improving Asthma Control: Protocol for a Single-Center, Investigator-Led, Randomized, Double-Blind, Placebo-Controlled Trial.JMIR research protocols · 2021Article
- Household environmental factors and children's respiratory health: comparison of two cross-sectional studies over 25 years in Wuhan, China.Journal of thoracic disease · 2021Article
- Obesity may enhance the adverse effects of NOThe Journal of allergy and clinical immunology · 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
11 authors at 5 institutions in 1 country.
Funding
Abstract
unlabelledNitrogen dioxide (NO2 ), a by-product of combustion produced by indoor gas appliances such as cooking stoves, is associated with respiratory symptoms in those with obstructive airways disease. We conducted a three-armed randomized trial to evaluate the efficacy of interventions aimed at reducing indoor NO2 concentrations in homes with unvented gas stoves: (i) replacement of existing gas stove with electric stove; (ii) installation of ventilation hood over existing gas stove; and (iii) placement of air purifiers with high-efficiency particulate air (HEPA) and carbon filters. Home inspection and NO2 monitoring were conducted at 1 week pre-intervention and at 1 week and 3 months post-intervention. Stove replacement resulted in a 51% and 42% decrease in median NO2 concentration at 3 months of follow-up in the kitchen and bedroom, respectively (P = 0.01, P = 0.01); air purifier placement resulted in an immediate decrease in median NO2 concentration in the kitchen (27%, P < 0.01) and bedroom (22%, P = 0.02), but at 3 months, a significant reduction was seen only in the kitchen (20%, P = 0.05). NO2 concentrations in the kitchen and bedroom did not significantly change following ventilation hood installation. Replacing unvented gas stoves with electric stoves or placement of air purifiers with HEPA and carbon filters can decrease indoor NO2 concentrations in urban homes. PRACTICAL IMPLICATIONS: Several combustion sources unique to the residential indoor environment, including gas stoves, produce nitrogen dioxide (NO2), and higher NO2 concentrations, are associated with worse respiratory morbidity in people with obstructive lung disease. A handful of studies have modified the indoor environment by replacing unvented gas heaters; this study, to our knowledge, is the first randomized study to target unvented gas stoves. The results of this study show that simple home interventions, including replacement of an unvented gas stove with an electric stove or placement of HEPA air purifiers with carbon filters, can significantly decrease indoor NO2 concentrations.
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.