Evidence map›Paper›PMID 34376199›Full record

ArticleJournal of neuroengineering and rehabilitation2021

A smartphone-based online system for fall detection with alert notifications and contextual information of real-life falls.

Yaar Harari, Nicholas Shawen, Chaithanya K Mummidisetty, Mark V Albert, Konrad P Kording, Arun Jayaraman

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroengineering and rehabilitation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 10% 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, 1 synthesis or guideline pooled it, 40 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

6 authors at 4 institutions in 1 country.

Yaar Harari *Max Nader Rehabilitation Technologies and Outcomes Lab, Shirley Ryan Ability Lab, IL, Chicago, USA.
Nicholas Shawen *Max Nader Rehabilitation Technologies and Outcomes Lab, Shirley Ryan Ability Lab, IL, Chicago, USA.
Chaithanya K MummidisettyMax Nader Rehabilitation Technologies and Outcomes Lab, Shirley Ryan Ability Lab, IL, Chicago, USA.
Mark V AlbertDepartment of Computer Science and Engineering, University of North Texas, Denton, TX, USA.
Konrad P KordingDepartments of Bioengineering and Neuroscience, University of Pennsylvania, Philadelphia, PA, USA.
Arun JayaramanMax Nader Rehabilitation Technologies and Outcomes Lab, Shirley Ryan Ability Lab, IL, Chicago, USA. a-jayaraman@northwestern.edu.
Northwestern University · USShirley Ryan AbilityLab · USUniversity of North Texas · USUniversity of Pennsylvania · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM008152 · NIGMS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI ARDEHALI, HOSSEIN · 1987 to 2021
$24.0M
Understanding Real-Life Falls in Amputees using Mobile Phone TechnologyR01EB019406 · NIBIB · REHABILITATION INSTITUTE OF CHICAGO D/B/A SHIRLEY RYAN ABILITYLAB · PI JAYARAMAN, ARUN · 2014 to 2017
$1.4M
NIBIB NIH HHS R01 EB019406NIGMS NIH HHS T32 GM008152
6 · The paper itself

Abstract

backgroundFalls are a leading cause of accidental deaths and injuries worldwide. The risk of falling is especially high for individuals suffering from balance impairments. Retrospective surveys and studies of simulated falling in lab conditions are frequently used and are informative, but prospective information about real-life falls remains sparse. Such data are essential to address fall risks and develop fall detection and alert systems. Here we present the results of a prospective study investigating a proof-of-concept, smartphone-based, online system for fall detection and notification.

methodsThe system uses the smartphone's accelerometer and gyroscope to monitor the participants' motion, and falls are detected using a regularized logistic regression. Data on falls and near-fall events (i.e., stumbles) is stored in a cloud server and fall-related variables are logged onto a web portal developed for data exploration, including the event time and weather, fall probability, and the faller's location and activity before the fall.

resultsIn total, 23 individuals with an elevated risk of falling carried the phones for 2070 days in which the model classified 14,904,000 events. The system detected 27 of the 37 falls that occurred (sensitivity = 73.0 %) and resulted in one false alarm every 46 days (specificity > 99.9 %, precision = 37.5 %). 42.2 % of the events falsely classified as falls were validated as stumbles.

conclusionsThe system's performance shows the potential of using smartphones for fall detection and notification in real-life. Apart from functioning as a practical fall monitoring instrument, this system may serve as a valuable research tool, enable future studies to scale their ability to capture fall-related data, and help researchers and clinicians to investigate real-falls.

Indexed as

Accidental FallsSmartphoneHumansOnline SystemsProspective StudiesRetrospective StudiesFall detection systemReal-fallsSmartPhone

Identifiers

PMID34376199
PMCPMC8353784
OpenAlexW3190352775

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.