Data From Wearables With Fitness Tracking Could Help Diagnose Mental Health Disorders, Study Finds

A team of researchers at Washington University developed a deep-learning model called WearNet to study data from wearables.

By ANI | Updated: 23 May 2023 11:31 IST

Data From Wearables With Fitness Tracking Could Help Diagnose Mental Health Disorders, Study Finds

Photo Credit: Garmin

Wearable data could be a boon to mental health diagnosis and treatment, said researcher Chenyang Lu

Highlights

Researchers developed a deep-learning model called WearNet
They studied 10 variables collected by the Fitbit activity tracker
Variables included total daily steps, calorie burn rate and heart rate

Depression and anxiety are two of the most common mental health illnesses in the United States, although more than half of those affected are neither identified nor treated. Mental health doctors are investigating the role of popular wearable fitness monitors in delivering data that could warn wearers of potential health hazards in the hopes of finding simple ways to diagnose such diseases.

While the long-term feasibility of detecting such disorders with wearable technology is an open question in a large and diverse population, a team of researchers at Washington University in St. Louis showed that there is reason for optimism. They developed a deep-learning model called WearNet, in which they studied 10 variables collected by the Fitbit activity tracker. Variables included everything from total daily steps and calorie burn rates to average heart rate and sedentary minutes. The researchers compiled Fitbit data for individuals for more than 60 days.

When considering depression and anxiety risk factors, WearNet did a better job at detecting depression and anxiety than state-of-the-art machine learning models. Further, it produced individual-level predictions of mental health outcomes, while other statistical analyses of wearable users assess correlations and risks at the group level.

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"Deep learning discovers the complex associations of these variables with mental disorders," said researcher Chenyang Lu, the Fullgraf Professor at the McKelvey School of Engineering and a professor of medicine at the School of Medicine. "Machine learning is our most powerful tool to extract these underlying relationships. Our work provided evidence, based on a large and diverse cohort, that it is possible to detect mental disorders with wearables. The next step is to convince a hospital system or some company to implement it."

Researchers included Ruixuan Dai, who worked in Lu's lab as a doctoral student and is now a software engineer at Google; Thomas Kannampallil, an associate professor of anesthesiology and associate chief research information officer at the School of Medicine and an associate professor of computer science and engineering at McKelvey Engineering; Seunghwan Kim, a doctoral candidate at the School of Medicine; Vera Thornton, an MD/PhD candidate at the School of Medicine; and Laura Bierut, MD, the Alumni Endowed Professor of Psychiatry at the School of Medicine.

The team presented its findings on May 10 at the ACM/IEEE Conference on Internet of Things Design and Implementation. The paper was awarded the Best Paper Award for IoT Data Analytics at the conference.

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Wearable data could be a boon to mental health diagnosis and treatment, according to Lu.

"Going to a psychiatrist and filling out questionnaires is time-consuming, and then people may have some reticence to see a psychiatrist," he said. "People are going about their lives while suffering from a disease that results in lower productivity and poorer life quality. This AI model is able to tell you that you have depression or anxiety disorders. Think of the AI model as an automated screening tool that could recommend that you go see a psychiatrist."

There is "an urgent need for an unobtrusive approach to detecting mental disorders," the researchers said. "Early detection can help clinicians diagnose and treat mental disorders in a timely manner. It can also enable individuals to adjust their behaviors and mitigate the impact of the disorders."

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The Washington University researchers studied the data of more than 10,000 Fitbit users, the largest wearable cohort to be part of a study. Previous studies considered small cohorts, some as small as 10 people, the largest topping out in the hundreds of users.

The Washington University study included a broad range of ages, races, ethnicities, and education levels, the most diverse cohort to date. Their data came from the "All of Us" research program at the National Institutes of Health (NIH). The program houses a collection of datasets that are designed to accelerate biomedical research and precision medicine.

Unrelated research also has reported favorably on wearables being a "promising way for longitudinal monitoring" of assessing mental status. Other "digital phenotypes," such as sleep and behavior patterns, can be gauged by wearables, the Washington University researchers wrote.

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