Evidence map›Paper›PMID 17885692›Full record

ArticleCanadian respiratory journal2007

Comparison of Canadian versus American emergency department visits for acute asthma.

Brian H Rowe, Gary W Bota, Sunday Clark, Carlos A Camargo, Multicenter Airway Research Collaboration Investigators

Abstract readComparative StudyMulticenter Study
In one paragraph

Article in Canadian respiratory journal, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Management of acute asthma in adults in the emergency department: assisted ventilation.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2010
    Article
  15. Management of acute asthma in adults in the emergency department: nonventilatory management.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2010
    Review
  16. Article
  17. Asthma in the emergency room in Canada.Canadian respiratory journal
    Article
  18. 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

5 authors.

Brian H RoweDepartment of Emergency Medicine and School of Public Health, University of Alberta, Edmonton, Alberta. brian.rowe@ualberta.ca
Gary W Bota
Sunday Clark
Carlos A Camargo
Multicenter Airway Research Collaboration Investigators

Funding

Wellcome Trust
6 · The paper itself

Abstract

backgroundAcute asthma is a common emergency department (ED) presentation in both Canada and the United States.

objectiveTo compare ED asthma management and outcomes between Canada and the United States.

methodsA prospective cohort study of 69 American and eight Canadian EDs was conducted. Patients aged two to 54 years who presented with acute asthma underwent a structured ED interview and telephone follow-up two weeks later.

resultsA total of 3031 patients were enrolled. Canadian patients were more likely to be white (89% versus 22%; P<0.001), have health insurance (100% versus 69%; P<0.001) and identify a primary care provider (89% versus 64%; P<0.001) than American patients. In addition, Canadian patients were more likely to be using inhaled corticosteroids (63% versus 44%; P<0.001) and had higher initial peak expiratory flow (61% versus 48%; P<0.001). In the ED, Canadians received fewer beta-agonist (one versus two; P<0.001) and more anticholinergic (two versus one; P<0.001) treatments in the first hour; use of systemic corticosteroids was similar (60% versus 68%; P=0.13). Canadians were less likely to be hospitalized (11% versus 21%; P=0.02). Corticosteroids were prescribed similarly at discharge (60% versus 69%; P=0.13); however, Canadians were discharged more commonly on inhaled corticosteroids (63% versus 11%; P<0.001) and relapses were similar.

conclusionsCanadian patients with acute asthma have fewer barriers to primary care and are more likely to be on preventive medications, both before the ED visit and following discharge. Admissions rates are higher in the United States; however, relapse after discharge is similar between countries. These findings highlight the influences of preventive practices and heath care systems on ED visits for asthma.

Indexed as

Acute DiseaseAdolescentAdultAsthmaCanadaChildChild, PreschoolChi-Square DistributionEmergency Service, HospitalFemaleHumansInfantLogistic ModelsMaleMiddle AgedOutcome Assessment, Health Care

Identifiers

PMID17885692
PMCPMC2676405

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.