Evidence map›Paper›PMID 30528616›Full record

ArticleThe Journal of allergy and clinical immunology2019

Causes of variability in latent phenotypes of childhood wheeze.

Ceyda Oksel, Raquel Granell, Osama Mahmoud, Adnan Custovic, A John Henderson, STELAR, Breathing Together investigators

Open access · hybridAbstract read
In one paragraph

Article in The Journal of allergy and clinical immunology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
10.2field-weighted citation impact, top 2% 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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 54 citations in OpenAlex.

  1. Machine learning-derived asthma and allergy trajectories in children: a systematic review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2025
    Pooled it
  2. Pooled it
  3. Review
  4. Review
  5. Article
  6. Article
  7. Review
  8. Artificial intelligence in pediatric allergy research.European journal of pediatrics · 2024
    Review
  9. Social inequalities in childhood asthma.The World Allergy Organization journal · 2024
    Review
  10. Asthma Inception: Epidemiologic Risk Factors and Natural History Across the Life Course.American journal of respiratory and critical care medicine · 2024
    Review
  11. Article
  12. Article
  13. Article
  14. Early-life residential exposure to moisture damage is associated with persistent wheezing in a Finnish birth cohort.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2022
    Article
  15. Modeling Wheezing Spells Identifies Phenotypes with Different Outcomes and Genetic Associates.American journal of respiratory and critical care medicine · 2022
    Article
  16. Article
  17. Article
  18. Recurrent Severe Preschool Wheeze: From Prespecified Diagnostic Labels to Underlying Endotypes.American journal of respiratory and critical care medicine · 2021
    Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Ceyda OkselSection of Paediatrics, Department of Medicine, Imperial College London, London, United Kingdom.
Raquel GranellDepartment of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom.
Osama MahmoudDepartment of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom.
Adnan CustovicSection of Paediatrics, Department of Medicine, Imperial College London, London, United Kingdom. Electronic address: a.custovic@imperial.ac.uk.
A John HendersonDepartment of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom.
STELAR
Breathing Together investigators
University of Bristol · GBImperial College London · GB

Funding

Medical Research Council G0401540Medical Research Council G0601361Medical Research Council G9815508Medical Research Council MR/K002449/2Wellcome Trust
6 · The paper itself

Abstract

backgroundLatent class analysis (LCA) has been used extensively to identify (latent) phenotypes of childhood wheezing. However, the number and trajectory of discovered phenotypes differed substantially between studies.

objectiveWe sought to investigate sources of variability affecting the classification of phenotypes, identify key time points for data collection to understand wheeze heterogeneity, and ascertain the association of childhood wheeze phenotypes with asthma and lung function in adulthood.

methodsWe used LCA to derive wheeze phenotypes among 3167 participants in the ALSPAC cohort who had complete information on current wheeze recorded at 14 time points from birth to age 16½ years. We examined the effects of sample size and data collection age and intervals on the results and identified time points. We examined the associations of derived phenotypes with asthma and lung function at age 23 to 24 years.

resultsA relatively large sample size (>2000) underestimated the number of phenotypes under some conditions (eg, number of time points <11). Increasing the number of data points resulted in an increase in the optimal number of phenotypes, but an identical number of randomly selected follow-up points led to different solutions. A variable selection algorithm identified 8 informative time points (months 18, 42, 57, 81, 91, 140, 157, and 166). The proportion of asthmatic patients at age 23 to 24 years differed between phenotypes, whereas lung function was lower among persistent wheezers.

conclusionsSample size, frequency, and timing of data collection have a major influence on the number and type of wheeze phenotypes identified by using LCA in longitudinal data.

Indexed as

AdultAge of OnsetAsthmaBiasChildCohort StudiesData CollectionFemaleHumansLatent Class AnalysisMaleModels, StatisticalPhenotypePrevalenceRespiratory SoundsRisk FactorsAvon Longitudinal Study of Parents and ChildrenChildhood asthmalatent class analysislongitudinal analysiswheeze phenotypes

Identifiers

PMID30528616
PMCPMC6505513
OpenAlexW2903280357

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.