Evidence map›Paper›PMID 15923244›Full record

ArticleThorax2005

Traffic related pollution and heart rate variability in a panel of elderly subjects.

J Schwartz, A Litonjua, H Suh, M Verrier, A Zanobetti, M Syring, B Nearing, R Verrier, P Stone, G MacCallum and 2 more

Abstract read
In one paragraph

Article in Thorax, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 118 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
118citing papers in PubMed, 6 pooled it
–field-weighted citation impact
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

118 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
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  4. Welding Fume Exposure and Epigenetic Alterations: A Systematic Review.International journal of environmental research and public health · 2019
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  18. Exosome-encapsulated lncRNA HOTAIRM1 contributes to PMScience China. Life sciences · 2024
    Article
  19. Air pollution, genetic susceptibility, and the risk of atrial fibrillation: A large prospective cohort study.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  20. Review

58 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

J SchwartzDepartment of Environmental Health, Environmental Epidemiology Program, Harvard School of Public Health, 401 Park Drive,P O Box 15677, Landmark Center, Suite 415, Boston, MA 02215, USA. jschwrtz@hsph.harvard.edu
A Litonjua
H Suh
M Verrier
A Zanobetti
M Syring
B Nearing
R Verrier
P Stone
G MacCallum
F E Speizer
D R Gold

Funding

Effect of Ambient Particles on Acute Stroke OnsetP01ES009825 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI GOLD, DIANE R · 1999 to 2009
$17.4M
NIEHS NIH HHS 5 P01 ES09825
6 · The paper itself

Abstract

backgroundParticulate air pollution has been associated with increased cardiovascular deaths and hospital admissions. To help understand the mechanisms, the types of particles most involved, and the types of persons most susceptible, the association between exposure to summertime air pollution and heart rate variability (HRV) was examined in a panel study of 28 elderly subjects.

methodsSubjects were seen once a week for up to 12 weeks and HRV (SDNN, r-MSSD, PNN50, low frequency/high frequency ratio (LFHFR)) was measured for approximately 30 minutes at each session using a defined protocol. Temperature, day of the week, and hour of the day were controlled, and dummy variables for each subject were controlled for subject specific risk factors.

resultsPM2.5 was associated with r-MSSD (-10.1% change for an interquartile range (IQR) increase in exposure (95% CI -2.8 to -16.9)) and PNN50, but stronger associations were seen with black carbon, an indicator of traffic particles, which was also associated with SDNN (-4.6% per IQR (95% CI -2.0 to -7.2)) and LFHFR. Secondary particles were more weakly associated with r-MSSD, as was ozone. No associations were seen with SO2 or NO2. CO had similar patterns of association to black carbon, which disappeared after controlling for black carbon. Black carbon had a substantially higher effect on SDNN in subjects who had had a previous myocardial infarction (-12.7%, 95% CI -5.7 to -19.25).

conclusionsParticles, especially from traffic, are associated with disturbances of autonomic control of the heart.

Indexed as

AgedAged, 80 and overArrhythmias, CardiacCarbonCarbon MonoxideElectrocardiography, AmbulatoryFemaleHumansMaleMiddle AgedNitrogen DioxideOzoneSulfur DioxideVehicle EmissionsCarbonCarbon MonoxideNitrogen DioxideOzoneSulfur DioxideVehicle Emissions

Identifiers

PMID15923244
PMCPMC1747419

What OpenQuestion holds

Textmetadata
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.