Evidence map›Paper›PMID 30026297›Full record

ArticleThorax2019

Impact of cystic fibrosis on birthweight: a population based study of children in Denmark and Wales.

Daniela K Schlüter, Rowena Griffiths, Abdulfatah Adam, Ashley Akbari, Martin L Heaven, Shantini Paranjothy, Anne-Marie Nybo Andersen, Siobhán B Carr, Tania Pressler, Peter J Diggle and 1 more

Open access · hybridAbstract readMulticenter Study
In one paragraph

Article in Thorax, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed, 32 citations in OpenAlex.

  1. Trial
  2. Review
  3. Maternal and fetal outcomes associated with CFTR modulator use during pregnancy: a scoping review.European respiratory review : an official journal of the European Respiratory Society · 2026
    Article
  4. Considerations for early life genetic therapies in cystic fibrosis.American journal of physiology. Lung cellular and molecular physiology · 2026
    Review
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Gestational and pregestational diabetes in pregnant women with cystic fibrosis.Journal of clinical & translational endocrinology · 2022
    Article
  11. Article
  12. Observational
  13. Article
  14. Review
  15. Article
  16. Article
  17. 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

11 authors at 6 institutions in 2 countries.

Daniela K SchlüterCentre for Health Informatics, Computing and Statistics (CHICAS), Lancaster Medical School, Lancaster University, Lancaster, UK.ORCID 0000-0001-9018-0022
Rowena GriffithsFarr Institute, Swansea University Medical School, Swansea University, Swansea, UK.
Abdulfatah AdamSection of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark.
Ashley AkbariFarr Institute, Swansea University Medical School, Swansea University, Swansea, UK.
Martin L HeavenFarr Institute, Swansea University Medical School, Swansea University, Swansea, UK.
Shantini ParanjothyDivision of Population Medicine, School of Medicine, Cardiff University, Cardiff, UK.
Anne-Marie Nybo AndersenSection of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark.
Siobhán B CarrDepartment of Respiratory Paediatrics, Royal Brompton Hospital, London, UK.
Tania PresslerCopenhagen Cystic Fibrosis Centre, Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Peter J DiggleCentre for Health Informatics, Computing and Statistics (CHICAS), Lancaster Medical School, Lancaster University, Lancaster, UK.
David Taylor-RobinsonDepartment of Public Health and Policy, Farr Institute, University of Liverpool, Liverpool, UK.
Swansea University · GBUniversity of Copenhagen · DKLancaster University · GBCardiff University · GBRoyal Brompton Hospital · GBUniversity of Liverpool · GB

Funding

Medical Research Council G0802448Medical Research Council MR/K006665/1Medical Research Council MR/P008577/1
6 · The paper itself

Abstract

backgroundPoor growth during infancy and childhood is a characteristic feature of cystic fibrosis (CF). However, the impact of CF on intrauterine growth is unclear. We studied the effect of CF on birth weight in Denmark and Wales, and assessed whether any associations are due to differences in gestational age at birth.

methodsWe conducted national registry linkage studies in two countries, using data for 2.2 million singletons born in Denmark (between 1980 and 2010) and Wales (between 1998 and 2015). We used hospital inpatient and outpatient data to identify 852 children with CF. Using causal mediation methods, we estimated the direct and indirect (via gestational age) effect of CF on birth weight after adjustment for sex, parity and socioeconomic background. We tested the robustness of our results by adjusting for additional factors such as maternal smoking during pregnancy in subpopulations where these data were available.

resultsBabies with CF were more likely to be born preterm and with low birth weight than babies with no CF (12.7% vs 5% and 9.4% vs 5.8% preterm; 11.9% vs 4.2% and 11% vs 5.4% low birth weight in Denmark and Wales, respectively). Using causal mediation methods, the total effect of CF on birth weight was estimated to be -178.8 g (95% CI -225.43 to -134.47 g) in the Danish population and -210.08 g (95% CI -281.97 to -141.5 g) in the Welsh population. About 40% of this effect of CF on birth weight was mediated through gestational age.

conclusionsCF significantly impacts on intrauterine growth and leads to lower birth weight in babies with CF, which is only partially explained by shorter gestation.

Indexed as

Birth WeightRegistriesAdultCystic FibrosisDenmarkFemaleFollow-Up StudiesGestational AgeHumansIncidenceInfant, NewbornMaleOutpatientsPopulation SurveillanceRetrospective StudiesSocioeconomic Factorsclinical epidemiologycystic fibrosis

Identifiers

PMID30026297
PMCPMC6484694
OpenAlexW2816288548

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.