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An Application for Pairing with Wearable Devices to Monitor Personal Health Status

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Published on: February 3, 2022

Evaluating Wearable Devices for Remote Monitoring in Psychosis: Pilot Study Nested Within the CONNECT Cohort Study.

Siân Bladon¹, John Ainsworth^1,2, Roberto Cahuantzi¹

¹Division of Informatics, Imaging and Data Sciences, School of Health Sciences, University of Manchester, Vaughan House, Manchester, United Kingdom.

JMIR Formative Research

|July 7, 2026

Summary

Wearable device evaluation for psychosis relapse detection found Samsung Galaxy Watch had lower data quality and technical performance compared to Fitbit and Apple Watch, leading to its discontinuation.

Keywords:

digital remote monitoring fitness tracker passive sensing psychosis schizophrenia spectrum disorders severe mental illness smartwatch wearable devices

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Published on: January 22, 2018

Area of Science:

Digital Health
Psychiatric Research
Wearable Technology

Background:

Digital remote monitoring, including wearables, shows promise for early psychosis relapse detection.
Selecting acceptable devices with high-quality data is a significant challenge.

Purpose of the Study:

To assess the acceptability and data quality of three commercial wearable devices (Fitbit, Samsung Galaxy, Apple Watch) in individuals with psychosis.
To inform device selection for the ongoing CONNECT cohort study.

Main Methods:

A nested pilot study evaluated Fitbit Charge 5, Samsung Galaxy Watch 5, and Apple Watch SE acceptability and data quality.
Acceptability was measured via a satisfaction questionnaire; data quality assessed through completeness (heart rate, steps, sleep) and troubleshooting frequency.
Data continuity over 20 weeks was a key metric for evaluating device performance.

Main Results:

Participant demographics varied across device groups, but acceptability was similar.
Samsung Galaxy Watch showed significantly lower data completeness for heart rate, steps, and sleep compared to Fitbit and Apple Watch.
The Samsung Galaxy Watch required more troubleshooting and lacked advanced physiological metrics.

Conclusions:

The Samsung Galaxy Watch was discontinued due to inferior data quality and technical performance.
This study underscores the necessity of nested device evaluations in long-term research for digital health interventions.