Evidence map›Paper›PMID 29674309›Full record

ArticleJMIR mHealth and uHealth2018

Measuring Risky Driving Behavior Using an mHealth Smartphone App: Development and Evaluation of gForce.

Raisa Z Freidlin, Amisha D Dave, Benjamin G Espey, Sean T Stanley, Marcial A Garmendia, Randall Pursley, Johnathon P Ehsani, Bruce G Simons-Morton, Thomas J Pohida

Abstract read
In one paragraph

Article in JMIR mHealth and uHealth, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Review
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.

Raisa Z FreidlinCenter for Information Technology, National Institutes of Health, Bethesda, MD, United States.ORCID http://orcid.org/0000-0003-3326-3774
Amisha D DaveBiomedical Engineering Department, University of Connecticut, Storrs, CT, United States.ORCID http://orcid.org/0000-0001-8377-8309
Benjamin G EspeyCenter for Information Technology, National Institutes of Health, Bethesda, MD, United States.ORCID http://orcid.org/0000-0002-8544-2750
Sean T StanleyCenter for Information Technology, National Institutes of Health, Bethesda, MD, United States.ORCID http://orcid.org/0000-0002-7493-440X
Marcial A GarmendiaCenter for Information Technology, National Institutes of Health, Bethesda, MD, United States.ORCID http://orcid.org/0000-0002-1013-1835
Randall PursleyCenter for Information Technology, National Institutes of Health, Bethesda, MD, United States.ORCID http://orcid.org/0000-0002-7933-3291
Johnathon P EhsaniBloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States.ORCID http://orcid.org/0000-0001-9869-1679
Bruce G Simons-MortonNational Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States.ORCID http://orcid.org/0000-0003-1099-6617
Thomas J PohidaCenter for Information Technology, National Institutes of Health, Bethesda, MD, United States.ORCID http://orcid.org/0000-0002-6093-2251

Funding

Signal Processing And Instrumentation SectionZIACT000261 · CIT · CENTER FOR INFORMATION TECHNOLOGY · PI POHIDA, THOMAS J · 2009 to 2021
$16.7M
6 · The paper itself

Abstract

backgroundNaturalistic driving studies, designed to objectively assess driving behavior and outcomes, are conducted by equipping vehicles with dedicated instrumentation (eg, accelerometers, gyroscopes, Global Positioning System, and cameras) that provide continuous recording of acceleration, location, videos, and still images for eventual retrieval and analyses. However, this research is limited by several factors: the cost of equipment installation; management and storage of the large amounts of data collected; and data reduction, coding, and analyses. Modern smartphone technology includes accelerometers built into phones, and the vast, global proliferation of smartphones could provide a possible low-cost alternative for assessing kinematic risky driving.

objectiveWe evaluated an in-house developed iPhone app (gForce) for detecting elevated g-force events by comparing the iPhone linear acceleration measurements with corresponding acceleration measurements obtained with both a custom Android app and the in-vehicle miniDAS data acquisition system (DAS; Virginia Tech Transportation Institute).

methodsThe iPhone and Android devices were dashboard-mounted in a vehicle equipped with the DAS instrumentation. The experimental protocol consisted of driving maneuvers on a test track, such as cornering, braking, and turning that were performed at different acceleration levels (ie, mild, moderate, or hard). The iPhone gForce app recorded linear acceleration (ie, gravity-corrected). The Android app recorded gravity-corrected and uncorrected acceleration measurements, and the DAS device recorded gravity-uncorrected acceleration measurements. Lateral and longitudinal acceleration measures were compared.

resultsThe correlation coefficients between the iPhone and DAS acceleration measurements were slightly lower compared to the correlation coefficients between the Android and DAS, possibly due to the gravity correction on the iPhone. Averaging the correlation coefficients for all maneuvers, the longitudinal and lateral acceleration measurements between iPhone and DAS were r

conclusionsThe gForce iPhone app reliably assessed elevated g-force events compared to the DAS. Collectively, the gForce app and iPhone platform have the potential to serve as feature-rich, inexpensive, scalable, and open-source tool for assessment of kinematic risky driving events, with potential for research and feedback forms of intervention.

Indexed as

elevated g-forceiPhonekinematic risky driving behaviorlateral accelerationlongitudinal accelerationnaturalistic driving studies

Identifiers

PMID29674309
PMCPMC5934540

What OpenQuestion holds

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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.