Evidence map›Paper›PMID 33605894›Full record

ArticleJMIR mHealth and uHealth2021

Simple Smartphone-Based Assessment of Gait Characteristics in Parkinson Disease: Validation Study.

Dongning Su, Zhu Liu, Xin Jiang, Fangzhao Zhang, Wanting Yu, Huizi Ma, Chunxue Wang, Zhan Wang, Xuemei Wang, Wanli Hu and 3 more

Abstract read
In one paragraph

Article in JMIR mHealth and uHealth, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 3 pooled it
–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

29 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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  11. Clinical utility of digital technologies in Parkinson's disease.Journal of neural transmission (Vienna, Austria : 1996) · 2026
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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.

Dongning Su *Department of Neurology, Beijing Tiantan Hospital, Beijing, China.ORCID 0000-0003-3609-4224
Zhu Liu *Department of Neurology, Beijing Tiantan Hospital, Beijing, China.ORCID 0000-0003-1160-3678
Xin Jiang *The Second Clinical Medical College, Jinan University, Guangzhou, China.ORCID 0000-0003-2670-3188
Fangzhao ZhangDepartment of Computer Science, The University of British Columbia, Vancouver, BC, Canada.ORCID 0000-0003-1633-6265
Wanting YuHinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Roslindale, MA, United States.ORCID 0000-0002-5241-0891
Huizi MaDepartment of Neurology, Beijing Tiantan Hospital, Beijing, China.ORCID 0000-0002-3845-8020
Chunxue WangDepartment of Neurology, Beijing Tiantan Hospital, Beijing, China.ORCID 0000-0002-3145-457X
Zhan WangDepartment of Neurology, Beijing Tiantan Hospital, Beijing, China.ORCID 0000-0002-6712-2286
Xuemei WangDepartment of Neurology, Beijing Tiantan Hospital, Beijing, China.ORCID 0000-0002-5191-1301
Wanli HuDepartment of Hematology and Oncology, Jingxi Campus, Capital Medical University, Beijing ChaoYang Hospital, Beijing, China.ORCID 0000-0002-6289-1748
Brad ManorHinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Roslindale, MA, United States.ORCID 0000-0002-0776-237X
Tao FengDepartment of Neurology, Beijing Tiantan Hospital, Beijing, China.ORCID 0000-0002-8530-4622
Junhong ZhouHinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Roslindale, MA, United States.ORCID 0000-0002-7931-7646

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundParkinson disease (PD) is a common movement disorder. Patients with PD have multiple gait impairments that result in an increased risk of falls and diminished quality of life. Therefore, gait measurement is important for the management of PD.

objectiveWe previously developed a smartphone-based dual-task gait assessment that was validated in healthy adults. The aim of this study was to test the validity of this gait assessment in people with PD, and to examine the association between app-derived gait metrics and the clinical and functional characteristics of PD.

methodsFifty-two participants with clinically diagnosed PD completed assessments of walking, Movement Disorder Society Unified Parkinson Disease Rating Scale III (UPDRS III), Montreal Cognitive Assessment (MoCA), Hamilton Anxiety (HAM-A), and Hamilton Depression (HAM-D) rating scale tests. Participants followed multimedia instructions provided by the app to complete two 20-meter trials each of walking normally (single task) and walking while performing a serial subtraction dual task (dual task). Gait data were simultaneously collected with the app and gold-standard wearable motion sensors. Stride times and stride time variability were derived from the acceleration and angular velocity signal acquired from the internal motion sensor of the phone and from the wearable sensor system.

resultsHigh correlations were observed between the stride time and stride time variability derived from the app and from the gold-standard system (r=0.98-0.99, P<.001), revealing excellent validity of the app-based gait assessment in PD. Compared with those from the single-task condition, the stride time (F

conclusionsA smartphone-based gait assessment can be used to provide meaningful metrics of single- and dual-task gait that are associated with disease severity and functional outcomes in individuals with PD.

Indexed as

Parkinson DiseaseAdultGaitHumansQuality of LifeSmartphoneWalkinggaitParkinson diseasesmartphonestride time (variability)validity

Identifiers

PMID33605894
PMCPMC7935653

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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.