Evidence map›Paper›PMID 32325394›Full record

ArticleParkinsonism & related disorders2020

Rate of progression from mild cognitive impairment to dementia in an essential tremor cohort: A prospective, longitudinal study.

Keith H Radler, Maria Anna Zdrodowska, Hollie Dowd, Tess E K Cersonsky, Edward D Huey, Stephanie Cosentino, Elan D Louis

Abstract read
In one paragraph

Article in Parkinsonism & related disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
–field-weighted citation impact
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

26 citing papers in PubMed.

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  13. Developing a Staging Scheme for Essential Tremor: A Discussion of Organizing Principles.Tremor and other hyperkinetic movements (New York, N.Y.) · 2023
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Keith H RadlerDivision of Movement Disorders, Department of Neurology, Yale School of Medicine, Yale University, New Haven, CT, USA.
Maria Anna ZdrodowskaDivision of Movement Disorders, Department of Neurology, Yale School of Medicine, Yale University, New Haven, CT, USA.
Hollie DowdDivision of Movement Disorders, Department of Neurology, Yale School of Medicine, Yale University, New Haven, CT, USA.
Tess E K CersonskyDivision of Movement Disorders, Department of Neurology, Yale School of Medicine, Yale University, New Haven, CT, USA.
Edward D HueyDepartment of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA; Taub Institute for Research on Alzheimer's Disease and the Aging Brain, College of Physicians and Surgeons, Columbia University, New York, NY, USA; Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
Stephanie CosentinoDepartment of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA; Taub Institute for Research on Alzheimer's Disease and the Aging Brain, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
Elan D LouisDivision of Movement Disorders, Department of Neurology, Yale School of Medicine, Yale University, New Haven, CT, USA; Department of Chronic Disease Epidemiology, Yale School of Public Health, Yale University, New Haven, CT, USA; Center for Neuroepidemiology and Clinical Neurological Research, Yale School of Medicine, Yale University, New Haven, CT, USA. Electronic address: Elan.Louis@UTSouthwestern.edu.

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
Satellite Diagnostic and Treatment Clinic CoreP50AG008702 · NIA · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI DE JAGER, PHILIP L · 1989 to 2019
$46.3M
Research Education CoreP30AG066462 · NIA · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI Miguel Arce · 2020 to 2026
$30.1M
Clinical Pathological Study of Cognitive Impairment in Essential TremorR01NS086736 · NINDS · YALE UNIVERSITY · PI COSENTINO, STEPHANIE ANN, LOUIS, ELAN D · 2014 to 2023
$8.1M
NCATS NIH HHS UL1 TR001863NIA NIH HHS P30 AG066462NIA NIH HHS P50 AG008702NINDS NIH HHS R01 NS086736
6 · The paper itself

Abstract

backgroundEssential tremor (ET), among the most common neurological diseases, is associated with cognitive dysfunction. Yet, nearly all knowledge of ET-related cognitive impairment is static and cross-sectional (e.g., prevalence), with virtually no dynamic information (i.e., course and progression, conversion rates, and clinical outcomes).

objectivesTo quantify the rate of progression from mild cognitive impairment (MCI) to dementia in a cohort of elderly ET cases.

methods167 ET cases, enrolled in a prospective, longitudinal, clinical-pathological study, underwent an extensive neuropsychological testing battery at baseline (T1), 1.5 years (T2), and 3 years (T3). Results of these assessments informed clinical diagnoses of normal cognition (ET-NC), MCI (ET-MCI), and dementia (ET-D).

resultsAt baseline, 26 cases (82.7 ± 7.7 years) were diagnosed with ET-MCI and were available for follow-up at T2. At T2, three of 26 (11.5%) had converted to ET-D. At the start of T2, 23 cases (83.6 ± 7.7 years) were diagnosed with ET-MCI and were available for follow-up at T3. At T3, six of 23 (26.1%) converted to ET-D. The average annual conversion rate from ET-MCI to ET-D was 12.5%.

conclusionsThe study of cognitive impairment in ET is a nascent field, with limited data. We show that the conversion rate from ET-MCI to ET-dementia was 12.5%. Available studies on historical controls have reported conversion rates of 2.6-6.3%. Data such as these systematically fill gaps in knowledge, creating a scientifically-derived knowledge base to guide physicians and patients in clinical settings.

Indexed as

Disease ProgressionAgedAged, 80 and overCognitive DysfunctionDementiaEssential TremorFemaleHumansLongitudinal StudiesMaleNeuropsychological TestsCerebellar diseasesCognitive agingDementiaEssential tremorMovement disorders

Identifiers

PMID32325394
PMCPMC7587472

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Registered trials

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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.