Evidence map›Paper›PMID 25398189›Full record

Trial reportEnvironmental health perspectives2015

Exposure to household air pollution from wood combustion and association with respiratory symptoms and lung function in nonsmoking women: results from the RESPIRE trial, Guatemala.

Daniel Pope, Esperanza Diaz, Tone Smith-Sivertsen, Rolv T Lie, Per Bakke, John R Balmes, Kirk R Smith, Nigel G Bruce

Erratum issuedOpen access · diamondAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Environmental health perspectives, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 104 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. COPD in People with HIV: Epidemiology, Pathogenesis, Management, and Prevention Strategies.International journal of chronic obstructive pulmonary disease · 2023
    Review
  12. Article
  13. Article
  14. Article
  15. Household air pollution and COPD: cause and effect or confounding by other aspects of poverty?The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2022
    Review
  16. Article
  17. Article
  18. Article
  19. The Conundrum of Cleaner Cookstove Interventions: Necessary but Insufficient?American journal of respiratory and critical care medicine · 2021
    Article
  20. Survey-based inventory for atmospheric emissions from residential combustion in Vietnam.Environmental science and pollution research international · 2021
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 3 countries.

Daniel PopeDivision of Public Health and Policy, University of Liverpool, Liverpool, United Kingdom.
Esperanza Diaz
Tone Smith-Sivertsen
Rolv T Lie
Per Bakke
John R Balmes
Kirk R Smith
Nigel G Bruce
University of Liverpool · GBBerkeley Public Health Division · USUniversity of Bergen · NOUniversity of California, San Francisco · US

Funding

INDOOR AIR POLLUTION AND CHILD ARI: A RANDOMIZED TRIALR01ES010178 · NIEHS · UNIVERSITY OF CALIFORNIA BERKELEY · PI SMITH, KIRK R · 2001 to 2009
$4.5M
NIEHS NIH HHS R01 ES010178NIEHS NIH HHS R01ES010178
6 · The paper itself

Abstract

backgroundWith 40% of the world's population relying on solid fuel, household air pollution (HAP) represents a major preventable risk factor for COPD (chronic obstructive pulmonary disease). Meta-analyses have confirmed this relationship; however, constituent studies are observational, with virtually none measuring exposure directly.

objectivesWe estimated associations between HAP exposure and respiratory symptoms and lung function in young, nonsmoking women in rural Guatemala, using measured carbon monoxide (CO) concentrations in exhaled breath and personal air to assess exposure.

methodsThe Randomized Exposure Study of Pollution Indoors and Respiratory Effects (RESPIRE) Guatemala study was a trial comparing respiratory outcomes among 504 women using improved chimney stoves versus traditional cookstoves. The present analysis included 456 women with data from postintervention surveys including interviews at 6, 12, and 18 months (respiratory symptoms) and spirometry and CO (ppm) in exhaled breath measurements. Personal CO was measured using passive diffusion tubes at variable times during the study. Associations between CO concentrations and respiratory health were estimated using random intercept regression models.

resultsRespiratory symptoms (cough, phlegm, wheeze, or chest tightness) during the previous 6 months were positively associated with breath CO measured at the same time of symptom reporting and with average personal CO concentrations during the follow-up period. CO in exhaled breath at the same time as spirometry was associated with lower lung function [average reduction in FEV1 (forced expiratory volume in 1 sec) for a 10% increase in CO was 3.33 mL (95% CI: -0.86, -5.81)]. Lung function measures were not significantly associated with average postintervention personal CO concentrations.

conclusionsOur results provide further support for the effects of HAP exposures on airway inflammation. Further longitudinal research modeling continuous exposure to particulate matter against lung function will help us understand more fully the impact of HAP on COPD.

Indexed as

FiresWoodAdultAir Pollution, IndoorCarbon MonoxideCookingFemaleHumansParticulate MatterRespiratory Physiological PhenomenaRural PopulationSmokeYoung AdultCarbon MonoxideParticulate MatterSmoke

Identifiers

PMID25398189
PMCPMC4384202
OpenAlexW3096921430

What OpenQuestion holds

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LicenceCC0
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Registered trials

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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.