Evidence map›Paper›PMID 25651521›Full record

ArticlePloS one2015

Prematurity and prescription asthma medication from childhood to young adulthood: a Danish national cohort study.

Anne Louise Damgaard, Bo Mølholm Hansen, René Mathiasen, Frederik Buchvald, Theis Lange, Gorm Greisen

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
3.3field-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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it, 28 citations in OpenAlex.

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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 1 country.

Anne Louise DamgaardDepartment of Neonatology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
Bo Mølholm HansenDepartment of Neonatology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
René MathiasenDepartment of Pediatric and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
Frederik BuchvaldDept. of Pediatric and Adolescent Medicine, Pulmonary Service, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
Theis LangeDept. of Biostatistics, University of Copenhagen, Copenhagen, Denmark.
Gorm GreisenDepartment of Neonatology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
Rigshospitalet · DKCopenhagen University Hospital · DKUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPreterm birth is associated with increased risk of asthma-like symptoms and purchase of prescription asthma medication in childhood. We investigated whether this association persists into adulthood and whether it is affected by accounting for neonatal respiratory morbidity (acute respiratory disease and bronchopulmonary dysplasia).

methodsA national cohort of all infants born in Denmark in the period 1980-2009 was included in this register study. Data on purchase of asthma medication (combination of inhaled β-2 agonists and other drugs for obstructive airway disease) in 2010-2011 were obtained from the Danish National Prescription Registry. Associations between gestational age (GA), neonatal respiratory morbidity and a cross-sectional evaluation of asthma medication purchase were explored by multivariate logistic regressions.

resultsA full dataset was obtained on 1,790,241 individuals, 84.6% of all infants born in the period. Odds-ratios (95% CI) for the association between GA and purchase of asthma medication during infancy were: 3.86 (2.46-6.04) in GA 23-27 weeks, 2.37 (1.84-3.04) in GA 28-31 weeks and 1.59 (1.43-1.77) in GA 32-36 weeks compared to term infants with GA 37-42 weeks. Associations weakened in older age groups and became insignificant in young adults born extremely and very preterm with odds-ratios: 1.41 (0.63-3.19) and 1.15 (0.83-1.60) in GA 23-27 and 28-31 respectively. When adjusting for neonatal respiratory morbidity, the associations weakened but persisted both in childhood and adolescence.

conclusionThere was a strong dose-response association between gestational age and the purchase of prescription asthma medication in infancy and childhood. This association weakened during adolescence and was mostly non-significant in young adulthood. The increased risk of prescription asthma medication purchase in ex-preterm children could only partly be explained by neonatal respiratory morbidity.

Indexed as

Gestational AgePremature BirthAdolescentAdultAge FactorsAnti-Asthmatic AgentsAsthmaBronchopulmonary DysplasiaChildChild, PreschoolCohort StudiesCross-Sectional StudiesDenmarkFemaleHumansInfantAnti-Asthmatic AgentsPrescription Drugs

Identifiers

PMID25651521
PMCPMC4317188
OpenAlexW2045288008

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LicenceCC BY
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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.