Evidence map›Paper›PMID 19017893›Full record

Trial reportChest2009

Changes in environmental tobacco smoke exposure and asthma morbidity among urban school children.

Lynn B Gerald, Joe K Gerald, Linda Gibson, Karna Patel, Sijian Zhang, Leslie A McClure

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Chest, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 6% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 76 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Parental Depression is Prospectively Associated With Lower Smoking Cessation Rates and Poor Child Asthma Outcomes.Annals of behavioral medicine : a publication of the Society of Behavioral Medicine · 2018
    Trial
  5. Trial
  6. Trial
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Asthma-Related School Absenteeism, Morbidity, and Modifiable Factors.American journal of preventive medicine · 2016
    Article
  14. Article
  15. Article
  16. Review
  17. Review
  18. Monitoring asthma in childhood: management-related issues.European respiratory review : an official journal of the European Respiratory Society · 2015
    Review
  19. Article
  20. Article
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

6 authors at 2 institutions in 1 country.

Lynn B GeraldHealth System Information Services, School of Public Health, University of Alabama at Birmingham, Birmingham, AL; Critical Care Medicine, School of Public Health, University of Alabama at Birmingham, Birmingham, AL. Electronic address: lgerald@email.arizona.edu.
Joe K GeraldLung Health Center, School of Medicine, Department of Medicine, Division of Pulmonary, Allergy.
Linda GibsonLung Health Center, School of Medicine, Department of Medicine, Division of Pulmonary, Allergy; Critical Care Medicine, School of Public Health, University of Alabama at Birmingham, Birmingham, AL.
Karna PatelLung Health Center, School of Medicine, Department of Medicine, Division of Pulmonary, Allergy.
Sijian ZhangDepartment of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL.
Leslie A McClureDepartment of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL.
University of Alabama at Birmingham · USHealth Center · US

Funding

Effectiveness of School Based Supervised Asthma TherapyR01HL075043 · NHLBI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI GERALD, LYNN B · 2004 to 2006
$2.2M
NHLBI NIH HHS R01 HL 075043NHLBI NIH HHS R01 HL075043
6 · The paper itself

Abstract

backgroundEnvironmental tobacco smoke (ETS) exposure is associated with poor asthma outcomes in children. However, little is known about natural changes in ETS exposure over time in children with asthma and how these changes may affect health-care utilization. This article documents the relationship between changes in ETS exposure and childhood asthma morbidity among children enrolled in a clinical trial of supervised asthma therapy.

methodsData for this analysis come from a large randomized clinical trial of supervised asthma therapy in which 290 children with persistent asthma were randomized to receive either usual care or supervised asthma therapy. No smoking cessation counseling or ETS exposure education was provided to caregivers; however, children were given 20 min of asthma education, which incorporated discussion of the avoidance of asthma triggers, including ETS. Asthma morbidity and ETS exposure data were collected from caregivers via telephone interviews at baseline and at the 1-year follow-up.

resultsAt baseline, 28% of caregivers reported ETS exposure in the home and 19% reported exposure outside of the primary household only. Among children whose ETS exposure decreased from baseline, fewer hospitalizations (p = 0.034) and emergency department (ED) visits (p < or = 0.001) were reported in the 12 months prior to the second interview compared to the 12 months prior to the first interview. Additionally, these children were 48% less likely (p = 0.042) to experience an episode of poor asthma control (EPAC).

conclusionsThis is the first study to demonstrate an association between ETS exposure reduction and fewer EPACs, respiratory-related ED visits, and hospitalizations. These findings emphasize the importance of ETS exposure reduction as a mechanism to improve asthma control and morbidity. Potential policy implications include supporting ETS reductions and smoking cessation interventions for parents and caregivers of children with asthma. Research to identify the most cost-effective strategy is warranted.

Indexed as

AsthmaCaregiversChildFemaleHealth EducationHumansMaleSmoking CessationTobacco Smoke PollutionUrban PopulationTobacco Smoke Pollution

Identifiers

PMID19017893
PMCPMC2763557
OpenAlexW2051948142

What OpenQuestion holds

Textmetadata
LicenceTDM
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.