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Validity of a smartphone-based fall detection application on different phones worn on a belt or in a trouser pocket

 
: Vermeulen, J.; Willard, S.; Aguiar, B.; Witte, L.P. de

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Assistive technology 27 (2015), No.1, pp.18-23
ISSN: 1040-0435
ISSN: 1949-3614
English
Journal Article
Fraunhofer AICOS ()
fall detection; smartphone; validity; elderly people

Abstract
The objective of this study was to evaluate the sensitivity and specificity of a smartphone-based fall detection application when different smartphone models are worn on a belt or in a trouser pocket. Eight healthy adults aged between 18 and 24 years old simulated 10 different types of true falls, 5 different types of falls with recovery, and 11 daily activities, five consecutive times. Participants wore one smartphone in a pocket that was attached to their belt and another one in their trouser pocket. All smartphones were equipped with a built-in accelerometer and the fall detection application. Four participants tested the application on a Samsung S3 and four tested the application on a Samsung S3 mini. Sensitivity scores were .75 (Samsung S3 belt), .88 (Samsung S3 mini trouser pocket), and .90 (Samsung S3 mini belt/Samsung S3 trouser pocket). Specificity scores were .87 (Samsung S3 trouser pocket), .91 (Samsung S3 mini trouser pocket), .97 (Samsung S3 belt), and .99 (Samsun g S3 mini belt). These results suggest that an application on a smartphone can generate valid fall alarms when worn on a belt or in a trouser pocket. However, sensitivity should be improved before implementation of the application in practice.

: http://publica.fraunhofer.de/documents/N-352452.html