Evidence map›Paper›PMID 28215268›Full record

Trial reportSleep medicine2017

Periodic limb movements and restless legs syndrome in children with a history of prematurity.

Christopher M Cielo, Lourdes M DelRosso, Ignacio E Tapia, Sarah N Biggs, Gillian M Nixon, Lisa J Meltzer, Joel Traylor, Ji Young Kim, Carole L Marcus, Caffeine for Apnea of Prematurity – Sleep Study Group

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Sleep medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.2field-weighted citation impact, top 21% 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, 18 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Sleep Deficiency and Pediatric Chronic Pain.The Nursing clinics of North America · 2021
    Review
  5. Article
  6. 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

10 authors at 3 institutions in 2 countries.

Christopher M CieloSleep Center, Children's Hospital of Philadelphia and the University of Pennsylvania School of Medicine, Philadelphia, PA, USA. Electronic address: cieloc@email.chop.edu.
Lourdes M DelRossoSleep Center, Children's Hospital of Philadelphia and the University of Pennsylvania School of Medicine, Philadelphia, PA, USA.
Ignacio E TapiaSleep Center, Children's Hospital of Philadelphia and the University of Pennsylvania School of Medicine, Philadelphia, PA, USA.
Sarah N BiggsThe Ritchie Centre, Hudson Institute of Medical Research, Department of Paediatrics, Monash University, Melbourne, Victoria, Australia.
Gillian M NixonThe Ritchie Centre, Hudson Institute of Medical Research, Department of Paediatrics, Monash University, Melbourne, Victoria, Australia.
Lisa J MeltzerDepartment of Pediatrics, National Jewish Health, Denver, CO, USA.
Joel TraylorSleep Center, Children's Hospital of Philadelphia and the University of Pennsylvania School of Medicine, Philadelphia, PA, USA.
Ji Young KimClinical and Translational Research Center, Children's Hospital of Philadelphia and the University of Pennsylvania School of Medicine, Philadelphia, PA, USA.
Carole L MarcusSleep Center, Children's Hospital of Philadelphia and the University of Pennsylvania School of Medicine, Philadelphia, PA, USA.
Caffeine for Apnea of Prematurity – Sleep Study Group
Children's Hospital of Philadelphia · USHudson Institute of Medical Research · AUNational Jewish Health · US

Funding

Institutional Clinical and Translational Science AwardKL2TR001879 · NCATS · UNIVERSITY OF PENNSYLVANIA · PI MEAGHER, EMMA ANNE · 2016 to 2025
$13.7M
Institutional Clinical and Translational Science AwardKL2TR000139 · NCATS · UNIVERSITY OF PENNSYLVANIA · PI FITZGERALD, GARRET A · 2012 to 2015
$3.9M
Long-term effects of therapeutic caffeine use for apnea of prematurity on sleep dR01HL098045 · NHLBI · CHILDREN'S HOSP OF PHILADELPHIA · PI MARCUS, CAROLE L · 2009 to 2012
$1.1M
NCATS NIH HHS KL2 TR000139NCATS NIH HHS KL2 TR001879NHLBI NIH HHS R01 HL098045
6 · The paper itself

Abstract

introductionLittle is known about the pediatric population at an increased risk of restless legs syndrome (RLS) and periodic limb movement disorder (PLMD). Polysomnographic data from the Caffeine for Apnea of Prematurity-Sleep (CAPS) study showed a high prevalence of elevated periodic limb movement index (PLMI) in a cohort of ex-preterm children, but the clinical importance of this finding, such as association with RLS, is unknown. We hypothesized that ex-preterm children would have a high prevalence of RLS and PLMD.

methodsEx-preterm children enrolled in CAPS, now aged 5-12 years, completed home polysomnography (PSG) and standardized questionnaires. A diagnosis of RLS or PLMD was established by participants meeting the International Classification of Sleep Disorders, 3rd edition, criteria based on questionnaires and polysomnograms. The clinically available serum ferritin levels were assessed.

resultsIn total, 167 participants underwent polysomnography and completed all questionnaires. The overall prevalence of RLS was 14/167 (8.4%). An additional 13 subjects (7.8%) were found to have PLMD. Of the 26 participants who had PLMI > 5/h, seven (26.9%) had RLS and 13 (50%) had PLMD. The serum ferritin levels were <50 mcg/L (range -38.4) for all eight participants referred for testing.

conclusionsChildren with a history of prematurity have a high prevalence of RLS, particularly those with elevated periodic limb movements. Iron deficiency likely contributes to RLS and PLMD symptoms in this population. Clinicians evaluating ex-preterm children with sleep disturbances should evaluate for RLS and PLMD. Further studies including serum ferritin evaluation are required to confirm these findings.

Indexed as

Premature BirthChildChild, PreschoolCohort StudiesFemaleFerritinsHumansMaleNocturnal Myoclonus SyndromePregnancyPrevalenceRestless Legs SyndromeFerritinsChildrenPeriodic limb movement disorderPrematurityRestless legs syndrome

Identifiers

PMID28215268
PMCPMC5321628
OpenAlexW2298779752

What OpenQuestion holds

Textmetadata
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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.