Evidence map›Paper›PMID 21422091›Full record

ArticlePediatrics2011

Risk of asthma in young adults who were born preterm: a Swedish national cohort study.

Casey Crump, Marilyn A Winkleby, Jan Sundquist, Kristina Sundquist

Open access · bronzeAbstract read
In one paragraph

Article in Pediatrics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 3 pooled it
10.5field-weighted citation impact, top 1% 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

46 citing papers in PubMed, 3 syntheses or guidelines pooled it, 113 citations in OpenAlex.

  1. Pooled it
  2. Preterm birth and mortality in adulthood: a systematic review.Journal of perinatology : official journal of the California Perinatal Association · 2020
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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

4 authors at 2 institutions in 2 countries.

Casey CrumpDepartment of Medicine, Stanford University, Palo Alto, California, USA. kccrump@stanford.edu
Marilyn A Winkleby
Jan Sundquist
Kristina Sundquist
Lund University · SEStanford University · US

Funding

Genetic, Social, and Developmental Epidemiology of Drug Use DisordersR01DA030005 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI KENNETH SEEDMAN KENDLER, JAN O SUNDQUIST · 2010 to 2026
$7.6M
Mothers, Places, and Preterm BirthR01HD052848 · NICHD · LUNDS UNIVERSITET · PI SUNDQUIST, JAN O · 2007 to 2010
$1.8M
NICHD NIH HHS 1R01HD052848-01NICHD NIH HHS R01 HD052848NIDA NIH HHS 1R01DA030005-01A1NIDA NIH HHS R01 DA030005
6 · The paper itself

Abstract

objectivePreterm birth is associated with asthma-like symptoms in childhood and possibly in adolescence, but the longer-term risk of asthma is unknown and increasingly relevant as larger numbers of these individuals enter adulthood. Our objective was to evaluate whether those who were born preterm are more likely to be prescribed asthma medications in young adulthood than those who were born term. PATIENTS AND

methodsWe conducted a national cohort study of all singleton infants born in Sweden from 1973 through 1979 (n = 622 616), followed to ages 25.5 to 35.0 years to determine whether asthma medications were prescribed in 2005-2007. Asthma medication data were obtained from all outpatient and inpatient pharmacies throughout Sweden. To improve the positive predictive value for asthma, the outcome was defined as prescription of (1) both a β-2 agonist inhalant and a glucocorticoid inhalant or (2) a combination inhalant containing a β-2 agonist and other drugs for obstructive airway diseases.

resultsYoung adults who were born extremely preterm (23-27 weeks' gestation) were 2.4 times more likely (adjusted 95% CI: 1.41-4.06) to be prescribed asthma medications than those who were born term. No association was found between later preterm birth (28-32 or 33-36 weeks' gestation) and asthma medications in young adulthood.

conclusionsThis is the first study with sufficient statistical power to evaluate the risk of asthma beyond adolescence in individuals who were born extremely preterm. The results suggest that extreme preterm birth (23-27 weeks' gestation), but not later preterm birth, is associated with an increased risk of asthma at least into young adulthood.

Indexed as

AdolescentAdultAnti-Asthmatic AgentsAsthmaChildChild, PreschoolCohort StudiesFemaleGestational AgeHealth SurveysHumansInfantInfant, Extremely Low Birth WeightInfant, NewbornInfant, Premature, DiseasesInfant, Very Low Birth WeightAnti-Asthmatic Agents

Identifiers

PMID21422091
PMCPMC3387891
OpenAlexW2106102007

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.