Evidence map›Paper›PMID 21642045›Full record

ArticleEnvironmental health perspectives2011

Acute respiratory inflammation in children and black carbon in ambient air before and during the 2008 Beijing Olympics.

Weiwei Lin, Wei Huang, Tong Zhu, Min Hu, Bert Brunekreef, Yuanhang Zhang, Xingang Liu, Hong Cheng, Ulrike Gehring, Chengcai Li and 1 more

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 5 pooled it
11.3field-weighted citation impact, top 1% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

56 citing papers in PubMed, 5 syntheses or guidelines pooled it, 212 citations in OpenAlex.

  1. Pooled it
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  5. Fine Particulate Matter Concentrations in Urban Chinese Cities, 2005-2016: A Systematic Review.International journal of environmental research and public health · 2017
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  9. Trends and projections of PMFrontiers in public health · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 2 countries.

Weiwei LinState Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering and Centre for Environment and Health, Peking University, Beijing, China.
Wei Huang
Tong Zhu
Min Hu
Bert Brunekreef
Yuanhang Zhang
Xingang Liu
Hong Cheng
Ulrike Gehring
Chengcai Li
Xiaoyan Tang
Peking University · CNUtrecht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEpidemiologic evidence for a causative association between black carbon (BC) and health outcomes is limited.

objectivesWe estimated associations and exposure-response relationships between acute respiratory inflammation in schoolchildren and concentrations of BC and particulate matter with an aerodynamic diameter of ≤ 2.5 μm (PM2.5) in ambient air before and during the air pollution intervention for the 2008 Beijing Olympics.

methodsWe measured exhaled nitric oxide (eNO) as an acute respiratory inflammation biomarker and hourly mean air pollutant concentrations to estimate BC and PM2.5 exposure. We used 1,581 valid observations of 36 subjects over five visits in 2 years to estimate associations of eNO with BC and PM2.5 according to generalized estimating equations with polynomial distributed-lag models, controlling for body mass index, asthma, temperature, and relative humidity. We also assessed the relative importance of BC and PM2.5 with two-pollutant models.

resultsAir pollution concentrations and eNO were clearly lower during the 2008 Olympics. BC and PM2.5 concentrations averaged over 0-24 hr were strongly associated with eNO, which increased by 16.6% [95% confidence interval (CI), 14.1-19.2%] and 18.7% (95% CI, 15.0-22.5%) per interquartile range (IQR) increase in BC (4.0 μg/m3) and PM2.5 (149 μg/m3), respectively. In the two-pollutant model, estimated effects of BC were robust, but associations between PM2.5 and eNO decreased with adjustment for BC. We found that eNO was associated with IQR increases in hourly BC concentrations up to 10 hr after exposure, consistent with effects primarily in the first hours after exposure.

conclusionsRecent exposure to BC was associated with acute respiratory inflammation in schoolchildren in Beijing. Lower air pollution levels during the 2008 Olympics also were associated with reduced eNO.

Indexed as

Air PollutantsChildChinaEnvironmental MonitoringEpidemiological MonitoringFemaleHumansInflammationMaleParticulate MatterRespiratory Tract DiseasesAir PollutantsParticulate Matter

Identifiers

PMID21642045
PMCPMC3230448
OpenAlexW2004281218

What OpenQuestion holds

Textmetadata
LicenceCC0
Read underepoch 390

Registered trials

None linked

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.