Evidence map›Paper›PMID 16601084›Full record

ArticleThorax2006

Long term effects of antenatal betamethasone on lung function: 30 year follow up of a randomised controlled trial.

S R Dalziel, H H Rea, N K Walker, V Parag, C Mantell, A Rodgers, J E Harding

Open access · bronzeAbstract read
In one paragraph

Article in Thorax, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 10% 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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

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  18. Antenatal steroid exposure and pulmonary outcomes in adolescents born with very low birth weight.Journal of perinatology : official journal of the California Perinatal Association · 2013
    Article
  19. Prematurity and programming: contribution of neonatal Intensive Care Unit interventions.Journal of developmental origins of health and disease · 2013
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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

7 authors at 1 institution in 1 country.

S R DalzielClinical Trials Research Unit, The University of Auckland, Auckland, New Zealand.
H H Rea
N K Walker
V Parag
C Mantell
A Rodgers
J E Harding
University of Auckland · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAntenatal betamethasone is routinely used for the prevention of neonatal respiratory distress syndrome in preterm infants. However, little is known of the long term effects of exposure to antenatal betamethasone on lung function in adulthood.

methodsFive hundred and thirty four 30 year olds whose mothers had participated in the first and largest randomised controlled trial of antenatal betamethasone were followed. Lung function was assessed by portable spirometric testing. The prevalence of asthma symptoms was assessed using the European Community Respiratory Health Survey questionnaire.

resultsFifty (20%) betamethasone exposed and 53 (19%) placebo exposed participants met the criteria for current asthma (relative risk 0.98 (95% CI 0.74 to 1.30), p = 0.89). 181 betamethasone exposed and 202 placebo exposed participants had acceptable spirometric data. There were no differences in lung function between betamethasone and placebo exposed groups (mean (SD) forced vital capacity in the betamethasone and placebo groups 105.9 (12.0) v 106.6 (12.6)% predicted, difference = -0.7 (95% CI -3.2 to 1.8), p = 0.59; mean (SD) forced expiratory volume in 1 second in the betamethasone and placebo groups 98.9 (13.4) v 98.5 (13.6)% predicted, difference = 0.3 (95% CI -2.4 to 3.1, p = 0.80)).

conclusionsAntenatal exposure to a single course of betamethasone does not alter lung function or the prevalence of wheeze and asthma at age 30.

Indexed as

AsthmaBetamethasoneFemaleFollow-Up StudiesGlucocorticoidsHumansInfant, NewbornInfant, PrematurePregnancyPrenatal CarePrenatal Exposure Delayed EffectsRandomized Controlled Trials as TopicRespiratory Distress Syndrome, NewbornRespiratory Function TestsBetamethasoneGlucocorticoids

Identifiers

PMID16601084
PMCPMC2104681
OpenAlexW2132240195

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.