Evidence map›Paper›PMID 20154078›Full record

ArticleChest2010

A comparison of obese and nonobese people with asthma: exploring an asthma-obesity interaction.

Smita Pakhale, Steve Doucette, Katherine Vandemheen, Louise-Philippe Boulet, R Andrew McIvor, J Mark Fitzgerald, Paul Hernandez, Catherine Lemiere, Sat Sharma, Stephen K Field and 3 more

Abstract readComparative StudyMulticenter Study
PubMed Publisher
In one paragraph

Article in Chest, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 pooled it
6.7field-weighted citation impact, top 3% 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

29 citing papers in PubMed, 2 syntheses or guidelines pooled it, 82 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Article
  6. Article
  7. The Role of Peptides in Asthma-Obesity Phenotype.International journal of molecular sciences · 2024
    Review
  8. Article
  9. Review
  10. Article
  11. Physical activity, restrictions in activity, and body mass index among urban children with persistent asthma.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2017
    Article
  12. Review
  13. Article
  14. Review
  15. Interacting effects of obesity, race, ethnicity and sex on the incidence and control of adult-onset asthma.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2016
    Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 10 institutions in 2 countries.

Smita PakhaleMSc, The Ottawa Hospital, 501 Smyth Rd, Ottawa, ON, Canada K1H 8L6. spakhale@ohri.ca
Steve Doucette
Katherine Vandemheen
Louise-Philippe Boulet
R Andrew McIvor
J Mark Fitzgerald
Paul Hernandez
Catherine Lemiere
Sat Sharma
Stephen K Field
Gonzalo G Alvarez
Robert E Dales
Shawn D Aaron
University of Ottawa · CAOttawa Hospital · CADalhousie University · CAInstitute for Respiratory Health · AUOttawa Hospital Research InstituteUniversité de Montréal · CAUniversité Laval · CAUniversity of British Columbia · CAUniversity of Calgary · CAUniversity of Manitoba · CA

Funding

Canadian Institutes of Health Research MOP-77520
6 · The paper itself

Abstract

objectiveThe objectives of our study were to compare patient characteristics and severity of disease in obese and normal-weight-confirmed people with asthma and to explore reasons for misdiagnosis of asthma, including potential interactions with obesity.

methodsWe randomly selected patients with physician-diagnosed asthma from eight Canadian cities. Asthma diagnosis was confirmed via a sequential lung function testing algorithm. Logistic analysis was conducted to compare obese and normal-weight-confirmed people with asthma and to assess characteristics associated with misdiagnosis of asthma. Interaction with obesity was investigated.

resultsComplete assessments were obtained on 496 subjects who reported physician-diagnosed asthma (242 obese and 254 normal-weight subjects); 346 had asthma confirmed with sequential lung testing, and in 150 subjects a diagnosis of asthma was ruled out. Obese subjects with asthma were significantly more likely to be men, have a history of hypertension and gastroesophageal reflux disease, and have a lower FEV(1) compared with normal-weight subjects with asthma. Older subjects, men, and subjects with higher FEV(1) were more likely to have received misdiagnoses of asthma. Obesity was not an independent predictor of misdiagnosis, however there was an interaction between obesity and urgent visits for respiratory symptoms. The odds ratio for receiving a misdiagnosis of asthma for obese individuals as compared with normal-weight individuals was 4.08 (95% CI, 1.23-13.5) for those with urgent visits in the past 12 months.

conclusionsObese people with asthma have lower lung function and more comorbidities compared with normal-weight people with asthma. Obese individuals who make urgent visits for respiratory symptoms are more likely to receive a misdiagnosis of asthma.

Indexed as

AdultAge FactorsAlgorithmsAsthmaBody Mass IndexCanadaChi-Square DistributionFemaleForced Expiratory VolumeGastroesophageal RefluxHumansHypertensionLogistic ModelsMaleMiddle AgedObesity

Identifiers

PMID20154078
OpenAlexW2109465677

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.