Evidence map›Paper›PMID 25739474›Full record

SynthesisClinical autonomic research : official journal of the Clinical Autonomic Research Society2015

Prevalence of REM sleep behavior disorder in multiple system atrophy: a multicenter study and meta-analysis.

Jose-Alberto Palma, Clara Fernandez-Cordon, Elizabeth A Coon, Phillip A Low, Mitchell G Miglis, Safwan Jaradeh, Arijit K Bhaumik, Praveen Dayalu, Elena Urrestarazu, Jorge Iriarte and 2 more

Open access · greenAbstract readMeta-AnalysisMulticenter StudyReview
In one paragraph

Synthesis in Clinical autonomic research : official journal of the Clinical Autonomic Research Society, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 4 pooled it
8.9field-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

56 citing papers in PubMed, 4 syntheses or guidelines pooled it, 129 citations in OpenAlex.

  1. Polysomnographic findings of multiple system atrophy: evidence from case-control studies.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Pooled it
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  8. The phenotype of "pure" autonomic failure.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2025
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  11. Article
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  13. Article
  14. Multiple system atrophy.Practical neurology · 2023
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  18. Article
  19. 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

12 authors at 7 institutions in 2 countries.

Jose-Alberto PalmaDysautonomia Center, Department of Neurology, New York University School of Medicine, 530 First Avenue, Suite 9Q, New York, NY, 10016, USA, josealberto.palmacarazo@nyumc.org.
Clara Fernandez-Cordon
Elizabeth A Coon
Phillip A Low
Mitchell G Miglis
Safwan Jaradeh
Arijit K Bhaumik
Praveen Dayalu
Elena Urrestarazu
Jorge Iriarte
Italo Biaggioni
Horacio Kaufmann
Clinica Universidad de Navarra · ESMayo Clinic in Arizona · USNew York University · USUniversity of Michigan–Ann Arbor · USPalo Alto University · USStanford University · USVanderbilt University · US

Funding

Structural genomics of norepinephrine transportersP01HL056693 · NHLBI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI BIAGGIONI, ITALO · 1997 to 2016
$30.8M
Training CoreU54NS065736 · NINDS · VANDERBILT UNIVERSITY MEDICAL CENTER · PI FREEMAN, ROY · 2009 to 2018
$11.6M
NHLBI NIH HHS P01 HL056693NINDS NIH HHS U54 NS065736NINDS NIH HHS U54NS065736
6 · The paper itself

Abstract

objectiveRapid eye movement (REM) sleep behavior disorder (RBD) is a parasomnia frequently affecting patients with synucleinopathies, but its exact prevalence in multiple system atrophy (MSA) is unclear. Whether questionnaires alone are sufficient to diagnose RBD is also unknown.

methodsWe performed a cross-sectional study of patients with probable MSA from six academic centers in the US and Europe. RBD was ascertained clinically and with polysomnography; we also performed a meta-analysis according to PRISMA guidelines for studies published before September 2014 that reported the prevalence of RBD in MSA. A random-effects model was constructed using weighted prevalence proportions. Only articles in English were included. Studies were classified into those that ascertained the presence of RBD in MSA clinically and with polysomnography. Case reports or case series (≤ 5 patients) were not included.

resultsForty-two patients completed questionnaires and underwent polysomnography. Of those, 32 (76.1%) had clinically suspected RBD and 34 (81%) had polysomnography-confirmed RBD. Two patients reported no symptoms of RBD but had polysomnography-confirmed RBD. The primary search strategy yielded 374 articles of which 12 met the inclusion criteria. The summary prevalence of clinically suspected RBD was 73% (95 % CI, 62-84%) in a combined sample of 324 MSA patients. The summary prevalence of polysomnography-confirmed RBD was 88 % (95% CI, 79-94%) in a combined sample of 217 MSA patients.

interpretationPolysomnography-confirmed RBD is present in up to 88% of patients with MSA. RBD was present in some patients that reported no symptoms. More than half of MSA patients report symptoms of RBD before the onset of motor deficits.

Indexed as

AgedCross-Sectional StudiesEuropeFemaleHumansMaleMiddle AgedMultiple System AtrophyPolysomnographyPrevalenceProspective StudiesREM Sleep Behavior DisorderUnited States

Identifiers

PMID25739474
PMCPMC4406814
OpenAlexW2003245045

What OpenQuestion holds

Textmetadata
LicenceTDM
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.