Evidence map›Paper›PMID 26610764›Full record

Observational studyBMJ open2015

Effects of birth weight and growth on childhood wheezing disorders: findings from the Born in Bradford Cohort.

Teumzghi F Mebrahtu, Richard G Feltbower, Roger C Parslow

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in BMJ open, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

7 citing papers in PubMed, 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

3 authors at 1 institution in 1 country.

Teumzghi F MebrahtuDivision of Epidemiology and Biostatistics, School of Medicine, University of Leeds, Leeds, UK.ORCID http://orcid.org/0000-0003-4821-2304
Richard G FeltbowerDivision of Epidemiology and Biostatistics, School of Medicine, University of Leeds, Leeds, UK.
Roger C ParslowDivision of Epidemiology and Biostatistics, School of Medicine, University of Leeds, Leeds, UK.
University of Leeds · GB

Funding

Medical Research Council MR/L01629X/1
6 · The paper itself

Abstract

objectivesTo examine the effects of birth weight and childhood growth on childhood wheezing disorders. We hypothesised that low birth weight and fast growth during early age would increase the risk of wheezing disorders.

settingObservational secondary analysis of data from the Born in Bradford cohort.

participantsAll children who were born at the Bradford Royal Infirmary hospital between March 2007 and December 2010 were eligible for the study. A total of 13,734 and 1598 children participated in the analyses of the effects of birth weight and growth on wheezing disorders, respectively. PRIMARY AND SECONDARY OUTCOME MEASURES: Wheezing disorders diagnosis (diagnosed as asthma or had wheezing symptom) during the ages of 0-7 years were the primary outcome measures. Diagnosis of asthma and occurrence of wheezing during the same period were secondary outcome measures. Birth weight was classified as normal (2.5-4.0 kg), low (<2.5 kg) and high (>4.0 kg). Growth mixture models were used to drive growth pattern outcomes which were classified as 'normal', 'fast' and 'slow' growth based on their velocities between birth and 36 months.

resultsThe adjusted relative risks (RRs) of wheezing disorders diagnosis for the low and high birthweight children were 1.29 (95% CI 1.12 to 1.50; p=0.001) and 0.91 (95% CI 0.79 to 1.04; p=0.17), respectively. The adjusted RRs of wheezing disorders diagnosis were 1.30 (95% CI 0.56 to 3.06; p=0.54) and 0.60 (95% CI 0.16 to 2.18; p=0.44), respectively, for the 'fast' and 'slow' growth as compared with the 'normal' growth.

conclusionsLow birth weight is associated with an increased risk of wheezing disorders; however, there is a weak evidence that suggests high birthweight children have a reduced risk in this birth cohort. Low birth weight coupled with a slower growth until 3 months and a sharp growth between 3 and 12 months has an increased risk of wheezing disorders diagnosis.

Indexed as

Birth WeightAsthmaChildChild, PreschoolFemaleHumansInfantInfant, Low Birth WeightInfant, NewbornMaleProspective StudiesRegression AnalysisRespiratory SoundsRisk FactorsUnited Kingdom

Identifiers

PMID26610764
PMCPMC4663430
OpenAlexW2178191332

What OpenQuestion holds

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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.