Evidence map›Paper›PMID 36258659›Full record

ArticleMovement disorders : official journal of the Movement Disorder Society2023

Ambulatory Detection of Isolated Rapid-Eye-Movement Sleep Behavior Disorder Combining Actigraphy and Questionnaire.

Andreas Brink-Kjaer, Niraj Gupta, Eric Marin, Jennifer Zitser, Oliver Sum-Ping, Anahid Hekmat, Flavia Bueno, Ana Cahuas, James Langston, Poul Jennum and 3 more

Open access · hybridAbstract read
In one paragraph

Article in Movement disorders : official journal of the Movement Disorder Society, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
3.9field-weighted citation impact, top 5% 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

28 citing papers in PubMed, 36 citations in OpenAlex.

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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

13 authors at 5 institutions in 3 countries.

Andreas Brink-KjaerDepartment of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark.ORCID 0000-0002-2872-0929
Niraj GuptaDepartment of Psychiatry and Behavioral Sciences, Stanford Center for Sleep Sciences and Medicine, Stanford University, Redwood City, California, USA.
Eric MarinDepartment of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA.
Jennifer ZitserDepartment of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA.ORCID 0000-0003-0200-6185
Oliver Sum-PingDepartment of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA.
Anahid HekmatDepartment of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA.
Flavia BuenoDepartment of Psychiatry and Behavioral Sciences, Stanford Center for Sleep Sciences and Medicine, Stanford University, Redwood City, California, USA.
Ana CahuasDepartment of Psychiatry and Behavioral Sciences, Stanford Center for Sleep Sciences and Medicine, Stanford University, Redwood City, California, USA.
James LangstonDepartment of Pathology, Stanford University, Stanford, California, USA.
Poul JennumDepartment of Clinical Neurophysiology, Danish Center for Sleep Medicine, Rigshospitalet, Denmark.
Helge B D SorensenDepartment of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark.
Emmanuel MignotDepartment of Psychiatry and Behavioral Sciences, Stanford Center for Sleep Sciences and Medicine, Stanford University, Redwood City, California, USA.
Emmanuel DuringDepartment of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA.
Stanford University · USStanford Medicine · USRigshospitalet · DKTechnical University of Denmark · DKTel Aviv Sourasky Medical Center · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIsolated rapid-eye-movement sleep behavior disorder (iRBD) is in most cases a prodrome of neurodegenerative synucleinopathies, affecting 1% to 2% of middle-aged and older adults; however, accurate ambulatory diagnostic methods are not available. Questionnaires lack specificity in nonclinical populations. Wrist actigraphy can detect characteristic features in individuals with RBD; however, high-frequency actigraphy has been rarely used.

objectiveThe aim was to develop a machine learning classifier using high-frequency (1-second resolution) actigraphy and a short patient survey for detecting iRBD with high accuracy and precision.

methodsThe method involved analysis of home actigraphy data (for seven nights and more) and a nine-item questionnaire (RBD Innsbruck inventory and three synucleinopathy prodromes of subjective hyposmia, constipation, and orthostatic dizziness) in a data set comprising 42 patients with iRBD, 21 sleep clinic patients with other sleep disorders, and 21 community controls.

resultsThe actigraphy classifier achieved 95.2% (95% confidence interval [CI]: 88.3-98.7) sensitivity and 90.9% (95% CI: 82.1-95.8) precision. The questionnaire classifier achieved 90.6% accuracy and 92.7% precision, exceeding the performance of the Innsbruck RBD Inventory and prodromal questionnaire alone. Concordant predictions between actigraphy and questionnaire reached a specificity and precision of 100% (95% CI: 95.7-100.0) with 88.1% sensitivity (95% CI: 79.2-94.1) and outperformed any combination of actigraphy and a single question on RBD or prodromal symptoms.

conclusionsActigraphy detected iRBD with high accuracy in a mixed clinical and community cohort. This cost-effective fully remote procedure can be used to diagnose iRBD in specialty outpatient settings and has potential for large-scale screening of iRBD in the general population. © 2022 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.

Indexed as

Parkinson DiseaseREM Sleep Behavior DisorderSynucleinopathiesActigraphyAgedHumansMiddle AgedSleepSurveys and Questionnairesactigraphymachine learningParkinson's diseaserapid-eye-movement sleep behavior disorder

Identifiers

PMID36258659
PMCPMC10092688
OpenAlexW4306765288

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.