Evidence map›Paper›PMID 33606730›Full record

ArticlePloS one2021

An artificial neural network approach to detect presence and severity of Parkinson's disease via gait parameters.

Tiwana Varrecchia, Stefano Filippo Castiglia, Alberto Ranavolo, Carmela Conte, Antonella Tatarelli, Gianluca Coppola, Cherubino Di Lorenzo, Francesco Draicchio, Francesco Pierelli, Mariano Serrao

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 4% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

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  8. Neurophysiology of cerebellar ataxias and gait disorders.Clinical neurophysiology practice · 2023
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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

10 authors at 3 institutions in 1 country.

Tiwana VarrecchiaDepartment of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL, Monte Porzio Catone Rome, Rome, Italy.ORCID 0000-0003-3910-2728
Stefano Filippo CastigliaDepartment of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Latina, Italy.
Alberto RanavoloDepartment of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL, Monte Porzio Catone Rome, Rome, Italy.
Carmela ConteIRCSS Fondazione Don Carlo Gnocchi, Milan, Italy.
Antonella TatarelliDepartment of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL, Monte Porzio Catone Rome, Rome, Italy.
Gianluca CoppolaDepartment of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Latina, Italy.
Cherubino Di LorenzoDepartment of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Latina, Italy.
Francesco DraicchioDepartment of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL, Monte Porzio Catone Rome, Rome, Italy.
Francesco PierelliDepartment of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Latina, Italy.
Mariano SerraoDepartment of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Latina, Italy.
Sapienza University of Rome · ITIstituto Nazionale per l'Assicurazione Contro gli Infortuni sul Lavoro · ITDon Carlo Gnocchi Foundation · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionGait deficits are debilitating in people with Parkinson's disease (PwPD), which inevitably deteriorate over time. Gait analysis is a valuable method to assess disease-specific gait patterns and their relationship with the clinical features and progression of the disease.

objectivesOur study aimed to i) develop an automated diagnostic algorithm based on machine-learning techniques (artificial neural networks [ANNs]) to classify the gait deficits of PwPD according to disease progression in the Hoehn and Yahr (H-Y) staging system, and ii) identify a minimum set of gait classifiers.

methodsWe evaluated 76 PwPD (H-Y stage 1-4) and 67 healthy controls (HCs) by computerized gait analysis. We computed the time-distance parameters and the ranges of angular motion (RoMs) of the hip, knee, ankle, trunk, and pelvis. Principal component analysis was used to define a subset of features including all gait variables. An ANN approach was used to identify gait deficits according to the H-Y stage.

resultsWe identified a combination of a small number of features that distinguished PwPDs from HCs (one combination of two features: knee and trunk rotation RoMs) and identified the gait patterns between different H-Y stages (two combinations of four features: walking speed and hip, knee, and ankle RoMs; walking speed and hip, knee, and trunk rotation RoMs).

conclusionThe ANN approach enabled automated diagnosis of gait deficits in several symptomatic stages of Parkinson's disease. These results will inspire future studies to test the utility of gait classifiers for the evaluation of treatments that could modify disease progression.

Indexed as

Neural Networks, ComputerAgedBiomechanical PhenomenaFemaleGaitGait AnalysisGait Disorders, NeurologicHumansMaleMiddle AgedParkinson DiseaseSeverity of Illness Index

Identifiers

PMID33606730
PMCPMC7894951
OpenAlexW3132964541

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LicenceCC BY
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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.