Evidence map›Paper›PMID 22606255›Full record

ArticlePloS one2012

A comparison of three methods to measure asthma in epidemiologic studies: results from the Danish National Birth Cohort.

Susanne Hansen, Marin Strøm, Ekaterina Maslova, Erik Lykke Mortensen, Charlotta Granström, Sjurdur F Olsen

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 7% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Observational
  8. Article
  9. Article
  10. Enterovirus D68 respiratory infection in a children's hospital in Japan in 2015.Pediatrics international : official journal of the Japan Pediatric Society · 2019
    Article
  11. Article
  12. High probability of comorbidities in bronchial asthma in Germany.NPJ primary care respiratory medicine · 2017
    Article
  13. Article
  14. Observational
  15. The Danish National Database for Asthma.Clinical epidemiology · 2016
    Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Birth weight, gestational age, fetal growth and childhood asthma hospitalization.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2014
    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 3 institutions in 2 countries.

Susanne HansenCentre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark. suu@ssi.dk
Marin Strøm
Ekaterina Maslova
Erik Lykke Mortensen
Charlotta Granström
Sjurdur F Olsen
Statens Serum Institut · DKHarvard University · USUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Asthma is a heterogeneous outcome and how the condition should be measured to best capture clinically relevant disease in epidemiologic studies remains unclear. We compared three methods of measuring asthma in the Danish National Birth Cohort (n>50.000). When the children were 7 years old, the prevalence of asthma was estimated from a self-administered questionnaire using parental report of doctor diagnoses, ICD-10 diagnoses from a population-based hospitalization registry, and data on anti-asthmatic medication from a population-based prescription registry. We assessed the agreement between the methods using kappa statistics. Highest prevalence of asthma was found using the prescription registry (32.2%) followed by the self-report (12.0%) and the hospitalization registry (6.6%). We found a substantial non-overlap between the methods (kappa = 0.21-0.38). When all three methods were combined the asthma prevalence was 3.6%. In conclusion, self-reported asthma, ICD-10 diagnoses from a hospitalization registry and data on anti-asthmatic medication use from a prescription registry lead to different prevalences of asthma in the same cohort of children. The non-overlap between the methods may be due to different abilities of the methods to identify cases with different phenotypes, in which case they should be treated as separate outcomes in future aetiological studies.

Indexed as

AsthmaChildCohort StudiesDenmarkEpidemiologic MethodsFemaleFollow-Up StudiesHospitalizationHumansInfant, NewbornMalePregnancyPrescriptionsPrevalenceRegistriesSurveys and Questionnaires

Identifiers

PMID22606255
PMCPMC3350521
OpenAlexW2108651660

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.