Incentivizing Behavior Change Skills to Promote Weight Loss

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

105 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-04-30

Study Completion Date

2018-05-31

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.

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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.

Conditions

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Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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no incentives

Participants do not receive financial incentives.

Group Type NO_INTERVENTION

No interventions assigned to this group

incentives for dietary self-monitoring

Participants receive financial incentives for dietary self-monitoring.

Group Type ACTIVE_COMPARATOR

incentives for dietary self-monitoring

Intervention Type BEHAVIORAL

Participants will receive intermittent financial incentives for recording their dietary intake on a dietary mobile phone application.

incentives for interim weight loss

Participants receive financial incentives for interim weight loss.

Group Type ACTIVE_COMPARATOR

incentives for interim weight loss

Intervention Type BEHAVIORAL

Participants will receive intermittent financial incentives for losing an expected amount of weight based weight obtained weekly.

incentives for both

Participants receive incentives for dietary self-monitoring and interim weight loss.

Group Type EXPERIMENTAL

incentives for both

Intervention Type BEHAVIORAL

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.

Interventions

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incentives for dietary self-monitoring

Participants will receive intermittent financial incentives for recording their dietary intake on a dietary mobile phone application.

Intervention Type BEHAVIORAL

incentives for interim weight loss

Participants will receive intermittent financial incentives for losing an expected amount of weight based weight obtained weekly.

Intervention Type BEHAVIORAL

incentives for both

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.

Intervention Type BEHAVIORAL

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

Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes