WildCam: A Privacy Conscious Wearable Eating Detection Ca... | NCT05547425

Studies
WildCam: A Privacy Conscious Wearable Eating Detection Camera People Will Actually Wear in the Wild

NCT05547425

Sponsor

Northwestern University

Status

Completed

Last Update Posted

Oct 27, 2023Actual

Enrollment

30Actual

Phase

Not Applicable

Conditions

Wearable Electronic Devices

Interventions

Blur Obfuscation
Edge Obfuscation
Cartoon Obfuscation
Raw images

Countries

United States

Protocol Section

Identification Module Status Module Sponsor/Collaborators Module Oversight Module Description Module Conditions Module Design Module Arms/Interventions Module Outcomes Module Eligibility Module Contacts/Locations Module References Module IPD Sharing Statement Module

Results Section

Participant Flow Module Baseline Characteristics Module Outcome Measures Module Adverse Events Module More Info Module

Annotation Section

Annotation Module

Document Section

Large Document Module

Derived Section

Miscellaneous Info Module Condition Browse Module Intervention Browse Module

Protocol Section

Identification Module

NCT ID

Results Section

No data available

No data is available for this block.

Annotation Section

No data available

No data is available for this block.

Document Section

No data available

No data is available for this block.

Derived Section

Miscellaneous Info Module

Version Holder

ID	Type	Description	Link
1R03DK127128-01	U.S. NIH Grant/Contract		View source

Status Module

Record Verification Date

Oct 2023

Overall Recruitment Status or Expanded Access Status

Completed

Last Known Status

Not provided

Delayed Posting

Not provided

Why Stopped

Not provided

Expanded Access Info

Start Date

Sep 20, 2022Actual

Primary Completion Date

Mar 21, 2023Actual

Completion Date

Mar 21, 2023Actual

First Submitted Date

May 24, 2022

First Submission Date that Met QC Criteria

Sep 16, 2022

First Posted Date

Sep 21, 2022Actual

Results Waived

Not provided

Results First Submitted Date

Not provided

Results First Submitted that Met QC Criteria

Not provided

Results First Posted Date

Not provided

Certification/Extension (aka Delayed Results) First Submitted Date

Not provided

Certification/Extension First Submitted that Passed QC Review

Not provided

Certification/Extension First Posted Date

Not provided

Last Update Submitted Date

Oct 25, 2023

Last Update Posted Date

Oct 27, 2023Actual

Sponsor/Collaborators Module

Responsible Party, by Official Title

Nabil Alshurafa, Assistant Professor, Northwestern UniversityPrincipal Investigator

Lead Sponsor

Northwestern UniversityOTHER

Collaborators

Name	Class
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)	NIH

Oversight Module

Has Data Monitoring Committee (DMC)

Is FDA Regulated Drug

Is FDA Regulated Device

Is Unapproved Device

Not provided

Pediatric Postmarket Surveillance of a Device Product

Not provided

Product Exported from US

Not provided

FDAAA801 Violation

Not provided

Description Module

Brief Summary

WildCam is a wearable device that collects video data of the user's face and upper torso to capture eating behaviors. WildCam and its accompanying software is privacy conscious, meaning it utilizes a computer vision algorithm that extracts proximal features (the user's body and objects-in-hand) from the video and digitally obfuscates the distal features (background environment and entities therein) to preserve the privacy of the wearer, as well as any bystanders who may be in the device's visual field. The present study tests the impact of 3 different obfuscation techniques on acceptability, including the willingness of users to wear the device. Participants are randomly assigned to 1 of the 3 obfuscation techniques (blurring, masking, or cartooning). Participants wear the WildCam during waking hours during a 7-day period with the randomly selected obfuscation setting enabled and a 7-day period with the raw images (no obfuscation) setting. The order of these periods is counterbalanced, and the two periods are separated by a 7-day washout period during which WildCam is not worn. Structured feedback, including user burden and acceptability surveys, is collected to determine the efficacy of each obfuscation technique on increasing user acceptability, including willingness to use the WildCam device, as opposed to a video-collecting device without obfuscation.

Detailed Description

Not provided

Design Module

Study Type

Interventional

Number of References to an Expanded Access Study

Not provided

Expanded Access Types

Not provided

Patient Registry

Not provided

Target Follow-Up Duration

Not provided

Phases

Not Applicable

Interventional Study Design

Allocation

Biospecimen

No data available

No data is available for this block.

Enrollment

30Actual

Arms/Interventions Module

Arm Groups

Label	Type	Description	Intervention Names
Blur obfuscation	Experimental	Blurring is applied to objects and people in the background of images.	Device: Blur Obfuscation
Edge obfuscation	Experimental	Objects and people in the background of images are replaced with an outline of the object.	Device: Edge Obfuscation
Cartoon obfuscation	Experimental	Blurring is applied to objects and people in the background of images and the wearer's face is concealed with cartoon faces.	Device: Cartoon Obfuscation
Raw images	Experimental	No editing is performed on images.	Device: Raw images

Interventions

Name	Type	Description	Arm Group Labels	Other Names
Blur Obfuscation	Device	Blurring is applied to objects and people in the background of images.	Blur obfuscation

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
Mean Wear Time	Average duration in minutes of data collected per day, calculated from video time stamps	7 days

Secondary Outcomes

Measure	Description	Time Frame
Acceptability	Score (0-80) obtained from User Burden Scale (Suh. et al 2016), collected post-study	7 days

Other Outcomes

Not provided

Eligibility Module

Eligibility Criteria

Inclusion Criteria:

BMI 30 or greater
Chicago Metro Area resident
Able to speak, read, and write in English
Valid phone number
Smartphone ownership
Have Wi-Fi at home

Exclusion Criteria:

15% or greater weight change in last 3 months
Medication related weight gain
Genetic obesity syndrome (e.g., Prader-Willi, Bardet-Biedl, Cohen Syndrome)
Member of household enrolled in study

Accepts Healthy Volunteers

Yes

Sex

All

Sex/Gender Based

Not provided

Sex/Gender Description

Not provided

Minimum Age

18 Years

Maximum Age

64 Years

Standard Ages

Adult

Study Population

Not provided

Sampling Method

Not provided

Contacts/Locations Module

Central Contacts

Not provided

Overall Officials

Not provided

Locations

Facility	Status	City	State	ZIP	Country	Contacts
Northwestern University Department of Preventive Medicine		Chicago	Illinois	60611	United States

IPD Sharing Statement Module

Plan to Share IPD

Description

Not provided

Types

Not provided

Time Frame

Not provided

Access Criteria

Not provided

URL

Not provided

Intervention Model Description

Of the 3 obfuscation settings (blur, mask, cartoon), participants are randomly assigned to 1, which they test for the first or second 7-day test period. During the remaining test period, participants use WildCam with the raw images setting. There is a washout period between each test period. The order of the test sequence is counterbalanced across participants to reduce carryover effects.