Evidence map›Paper›PMID 32904326›Full record

ArticleHeliyon2020

Quantification of tremor severity with a mobile tremor pen.

Tibor Zajki-Zechmeister, Mariella Kögl, Kerstin Kalsberger, Sebastian Franthal, Nina Homayoon, Petra Katschnig-Winter, Karoline Wenzel, László Zajki-Zechmeister, Petra Schwingenschuh

Open access · goldAbstract read
In one paragraph

Article in Heliyon, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.2field-weighted citation impact, top 17% 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

10 citing papers in PubMed, 18 citations in OpenAlex.

  1. Ultrasound-Informed State Estimation of Wrist Tremor Dynamics via Koopman Operator for Personalized Sensory Peripheral Nerve Stimulation.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2026
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  9. Wearable Devices for Assessment of Tremor.Frontiers in neurology · 2021
    Review
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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

9 authors at 1 institution in 1 country.

Tibor Zajki-ZechmeisterTremitas GmbH, Schleppe-Platz 5/1/2, 9020, Klagenfurt, Austria.
Mariella KöglDepartment of Neurology, Medical University of Graz, Auenbruggerplatz 22, Graz, 8036, Austria.
Kerstin KalsbergerDepartment of Neurology, Medical University of Graz, Auenbruggerplatz 22, Graz, 8036, Austria.
Sebastian FranthalDepartment of Neurology, Medical University of Graz, Auenbruggerplatz 22, Graz, 8036, Austria.
Nina HomayoonDepartment of Neurology, Medical University of Graz, Auenbruggerplatz 22, Graz, 8036, Austria.
Petra Katschnig-WinterDepartment of Neurology, Medical University of Graz, Auenbruggerplatz 22, Graz, 8036, Austria.
Karoline WenzelDepartment of Neurology, Medical University of Graz, Auenbruggerplatz 22, Graz, 8036, Austria.
László Zajki-ZechmeisterTremitas GmbH, Schleppe-Platz 5/1/2, 9020, Klagenfurt, Austria.
Petra SchwingenschuhDepartment of Neurology, Medical University of Graz, Auenbruggerplatz 22, Graz, 8036, Austria.
Medical University of Graz · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAn objective evaluation of tremor severity is necessary to document the course of disease, the efficacy of treatment, or interventions in clinical trials. Most available objective quantification devices are complex, immobile, or not validated. NEW

methodWe used the TREMITAS-System that comprises a pen-shaped sensor for tremor quantification. The Power of Main Peak and the Total Power were used as surrogate markers for tremor amplitude. Tremor severity was assessed by the TREMITAS-System and relevant subscores of the MDS-UPDRS and TETRAS rating scales in 14 patients with Parkinson's disease (PD) and 16 patients with Essential tremor (ET) off and on therapy. We compared tremor amplitudes assessed during wearable and hand-held constellations.

resultsWe found significant correlations between tremor amplitudes captured by TREM and tremor severity assessed by the MDS-UPDRS in PD (r = 0.638-0.779) and the TETRAS in ET (r = 0.597-0. 704) off and on therapy. The TREMITAS-System captured the L-Dopa-induced improvement of tremor in PD patients (p = 0.027). Tremor amplitudes did not differ between the handheld and wearable constellation (p > 0.05). COMPARISON WITH EXISTING

methodsWe confirm the results of previous studies using inertial based sensors that tremor severity and drug-induced changes of tremor severity can be quantified using inertial based sensors. The assessment of tremor amplitudes was not influenced by using a handheld or wearable constellation.

conclusionsThe TREMITAS-System can be used to quantify rest tremor in PD and postural tremor in ET and is capable of detecting clinically relevant changes in tremor in clinical and research settings.

Indexed as

AccelerometerBiomarkersBiomedical devicesBiomedical engineeringClinical researchDiagnosticsEssential tremorMobile monitoringNeurologyParkinson's diseasePen-shaped sensorTremor

Identifiers

PMID32904326
PMCPMC7452531
OpenAlexW3060925538

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.