EAT: A Reliable Eating Assessment Technology for Free-living Individuals

Study Overview
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Brief Summary
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This study utilizes a small, privacy-conscious wearable device intended to monitor human behaviors. The device is worn around the neck, capturing the wearer's head and upper torso within its field of view, and records color images without audio. Participants visit the lab for consent, device training and recording of several activities using the device. Participants will then take the device home and wear it during their normal schedules for four active weeks. During each active week, participants will wear the device, keep a log of all food and drink items consumed throughout the day and participate in unscheduled phone calls with a dietitian. A washout week occurs in between each active week in which participants do not need to complete any study tasks. Alongside the device, we have included three privacy filters (blur, edge, and avatar) capable of obscuring faces and objects seen in the device-captured images. All participants will be subject to unfiltered recording during their first week followed by a different filter each following active week in a random order. At the start of each active week, participants view an example of what their recorded images will look like that week (given the privacy filter). At the end of the seven weeks, participants will return the device and provide the lab with feedback on the design of the device and its privacy-preserving features.

Official Title
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EAT: A Reliable Eating Assessment Technology for Free-living Individuals

Conditions
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Wearable Electronic Device

Intervention / Treatment
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* Device: Blur Obfuscation
* Device: Avatar Obfuscation
* Device: Edge Obfuscation
* Device: No Obfuscation (raw)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: BMI greater than or equal to 18.5 Chicago metropolitan area resident Able to speak, read and write in English Has a valid phone number Owns a smartphone Has access to a computer Exclusion Criteria: Pregnant or breastfeeding individuals Experienced significant weight loss/gain in the last three months (25 lbs or more) Diagnosed with or has a family history of genetic obesity syndromes (e.g., Prader-Willi, Bardet-Biedl, Cohen Syndrome) Member of household enrolled in the study

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Blur Obfuscation<br> | Device: Blur Obfuscation<br>* Blurring is applied to the RGB images.<br>|
| Experimental: Edge Obfuscation<br> | Device: Edge Obfuscation<br>* A black background and simple outlines of objects/people are applied to the RGB images.<br>|
| Experimental: Avatar Obfuscation<br> | Device: Avatar Obfuscation<br>* Cartoonization and avatars are applied to the RGB images.<br>|
| Experimental: No Obfuscation (Raw)<br> | Device: No Obfuscation (raw)<br>* No editing is performed on the RGB images.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Daily wear time |  | 7 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Self-report acceptability |  | 7 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Algorithm, Wearable, Electronic, Device, Behavior, Eat, Privacy, Camera, Obesity, Obfuscation, Filter, Cartoon, Blur, Raw, Edge, Burden, Wearer, Bystander, Monitor, BMI, Calories, Tool, RGB, Thermal, Data, Health, Chest