Evidence map›Paper›PMID 25325486›Full record

ArticleSleep2014

Movement distribution: a new measure of sleep fragmentation in children with upper airway obstruction.

Scott Coussens, Mathias Baumert, Mark Kohler, James Martin, Declan Kennedy, Kurt Lushington, David Saint, Yvonne Pamula

Open access · bronzeAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Sleep, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 20% 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

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Association of obstructive sleep apnea and nocturnal hypoxemia with all-cancer incidence and mortality: a systematic review and meta-analysis.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Pooled it
  2. Pediatric sleep movements: a review of methodologies, normative data, disease associations, and research gaps.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Review
  3. Article
  4. Article
  5. Article
  6. Observational
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

8 authors at 3 institutions in 1 country.

Scott CoussensSchool of Medical Sciences, University of Adelaide, Adelaide, Australia: Department of Respiratory and Sleep Medicine, Children, Youth and Women's Health Service, North Adelaide, Australia.
Mathias BaumertCardiovascular Research Centre, Royal Adelaide Hospital and School of Medicine, University of Adelaide, Adelaide, Australia: Children's Research Centre, University of Adelaide, Adelaide, Australia.
Mark KohlerChildren's Research Centre, University of Adelaide, Adelaide, Australia.
James MartinDepartment of Respiratory and Sleep Medicine, Children, Youth and Women's Health Service, North Adelaide, Australia.
Declan KennedyDepartment of Respiratory and Sleep Medicine, Children, Youth and Women's Health Service, North Adelaide, Australia: Children's Research Centre, University of Adelaide, Adelaide, Australia.
Kurt LushingtonSchool of Psychology, University of South Australia, Adelaide, Australia.
David SaintSchool of Medical Sciences, University of Adelaide, Adelaide, Australia.
Yvonne PamulaDepartment of Respiratory and Sleep Medicine, Children, Youth and Women's Health Service, North Adelaide, Australia.
University of Adelaide · AUWomen's and Children's Health Network · AUUniversity of South Australia · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesTo develop a measure of sleep fragmentation in children with upper airway obstruction based on survival curve analysis of sleep continuity.

designProspective repeated measures.

settingHospital sleep laboratory.

participants92 children aged 3.0 to 12.9 years undergoing 2 overnight polysomnographic (PSG) sleep studies, 6 months apart. Subjects were divided into 3 groups based on their obstructive apnea and hypopnea index (OAHI) and other upper airway obstruction (UAO) symptoms: primary snorers (PS; n = 24, OAHI <1), those with obstructive sleep apnea syndrome (OSAS; n = 20, OAHI ≥1) and non-snoring controls (C; n = 48, OAHI <1).

interventionsSubjects in the PS and OSAS groups underwent tonsillectomy and adenoidectomy between PSG assessments. MEASUREMENTS AND

resultsPost hoc measures of movement and contiguous sleep epochs were exported and analyzed using Kaplan-Meier estimates of survival to generate survival curves for the 3 groups. Statistically significant differences were found between these group curves for sleep continuity (P < 0.05) when using movement events as the sleep fragmenting event, but not if stage 1 NREM sleep or awakenings were used.

conclusionUsing conventional indices of sleep fragmentation in survival curve analysis of sleep continuity does not provide a useful measure of sleep fragmentation in children with upper airway obstruction. However, when sleep continuity is defined as the time between gross body movements, a potentially useful clinical measure is produced.

Indexed as

AdenoidectomyAirway ObstructionCase-Control StudiesChildChild, PreschoolFemaleHumansKaplan-Meier EstimateMaleMovementPolysomnographyProspective StudiesSleepSleep Apnea, ObstructiveSleep DeprivationSnoringchildrenmovementsleep continuitysleep fragmentationupper airway obstruction

Identifiers

PMID25325486
PMCPMC4548508
OpenAlexW2318067813

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.