Incentivizing Behavior Change Skills to Promote Weight Loss

Study Overview
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Brief Summary
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The purpose of this study is to determine the feasibility of providing incentives to people enrolled in a weight-loss program for dietary self-monitoring and/or interim weight loss.

Detailed Description
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In this study, community outpatients will participate in an effective, 24-week, low-carbohydrate weight loss program delivered via biweekly group classes. An innovative information technology (IT) solution will collate dietary self-monitoring data (input by patients via a mobile phone dietary application) and weight loss data (input by patients via remote scale). An algorithm will classify participants as achieving adequate or inadequate dietary self-monitoring and weight loss to earn intermittent rewards of varying value in real-time. Participants will be notified of earning rewards via text messaging.

Official Title
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Incentivizing Behavior Change Skills to Promote Weight Loss

Conditions
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Obesity

Intervention / Treatment
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* Behavioral: incentives for dietary self-monitoring
* Behavioral: incentives for interim weight loss
* Behavioral: incentives for both


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: desire to lose weight; agree to attend visits per protocol; access to telephone and transportation; English speaking; able to complete study measures; smart phone with data and texting plan; body mass index 30 kg/m2 or greater Exclusion Criteria: pregnancy, breastfeeding, or lack of birth control if premenopausal dementia, excessive alcohol use, or psychiatric illness weight loss >4.5 kg in month prior to screening weight > 380 lb (due to limit of cellular scale) enrollment in other weight loss program residing in nursing home or receiving home health care unable to attend weight loss group at scheduled times impaired hearing medication other than metformin, incretin mimetics and incretin enhances for type 2 diabetes unstable heart disease in 3 months prior to screening furosemide 40 mg or higher (or equivalent) chronic kidney disease 2 or more errors on cognitive screener blood pressure ≥160/100 mmHg

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 70 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: Treatment
Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: no incentives<br>Participants do not receive financial incentives. | |
| Active Comparator: incentives for dietary self-monitoring<br>Participants receive financial incentives for dietary self-monitoring. | Behavioral: incentives for dietary self-monitoring<br>* Participants will receive intermittent financial incentives for recording their dietary intake on a dietary mobile phone application.<br>|
| Active Comparator: incentives for interim weight loss<br>Participants receive financial incentives for interim weight loss. | Behavioral: incentives for interim weight loss<br>* Participants will receive intermittent financial incentives for losing an expected amount of weight based weight obtained weekly.<br>|
| Experimental: incentives for both<br>Participants receive incentives for dietary self-monitoring and interim weight loss. | Behavioral: incentives for both<br>* Participants will receive intermittent financial incentives for recording their dietary intake on a dietary mobile phone application and for losing an expected amount of weight based on weight obtained weekly.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Weight Change From Baseline to 24 Weeks | Measured in pounds | 24 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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obesity, behavioral intervention, diet