Evidence map›Paper›PMID 36972957›Full record

Trial reportBMJ open2023

Application of multilevel linear spline models for analysis of growth trajectories in a cohort with repeat antenatal and postnatal measures of growth: a prospective cohort study.

Linda M O'Keeffe, Cara A Yelverton, Helena C Bartels, Kate N O'Neill, Ciara McDonnell, Fionnuala M McAuliffe

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in BMJ open, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

  1. Article
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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.

Linda M O'KeeffeSchool of Public Health, University College Cork, Cork, Ireland Linda.okeeffe@ucc.ie Linda.okeeffe@bristol.ac.uk.ORCID 0000-0002-0003-0774
Cara A YelvertonUCD Perinatal Research Centre, School of Medicine, University College Dublin, Dublin, Ireland.
Helena C BartelsUCD Perinatal Research Centre, School of Medicine, University College Dublin, Dublin, Ireland.ORCID 0000-0002-6470-9364
Kate N O'NeillSchool of Public Health, University College Cork, Cork, Ireland.ORCID 0000-0003-4843-4265
Ciara McDonnellDepartment of Paediatric Endocrinology & Diabetes, Children's Health Ireland at Temple Street, Dublin, Ireland.
Fionnuala M McAuliffeUCD Perinatal Research Centre, School of Medicine, University College Dublin, Dublin, Ireland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo model trajectories of antenatal and postnatal growth using linear spline multilevel models.

designProspective cohort study.

settingMaternity hospital in Dublin, Ireland.

participants720-759 mother-child pairs from the ROLO study (initially a randomised control trial of a low glycaemic index diet in pregnancy to prevent recurrence of macrosomia [birth weight >4 kg]). PRIMARY OUTCOMES: Trajectories of growth from 20 weeks gestation (abdominal circumference [AC], head circumference [HC] and weight) or birth (length/height) to 5 years.

resultsOver 50% of women had third-level education and 90% were of white ethnicity. Women were a mean (SD) age of 32 years (4.2) at recruitment. The best fitting model for AC, HC and weight included a model with 5 linear spline periods. The best fitting models for length/height included a model with 3 linear spline periods from birth to 6 months, 6 months to 2 years and 2 years to 5 years. Comparison of observed and predicted values for each model demonstrated good model fit. For all growth measures, growth rates were generally fastest in pregnancy or immediately post partum (for length/height), with rates of growth slowing after birth and becoming slower still as infancy and childhood progressed.

conclusionWe demonstrate the application of multilevel linear spline models for examining growth trajectories when both antenatal and postnatal measures of growth are available. The approach may be useful for cohort studies or randomised control trials with repeat prospective assessments of growth.

Indexed as

ParturitionAdultBirth WeightChildCohort StudiesFemaleGestational AgeHumansPregnancyProspective StudiesEPIDEMIOLOGYOBSTETRICSPAEDIATRICS

Identifiers

PMID36972957
PMCPMC10069489

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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.