The Weigh Forward, Financial Incentives for Maintenance of Weight Loss

2015-09-03 00:23:22 | BioPortfolio


This study aims to evaluate the effectiveness of financial incentives in improving and maintaining weight loss.


The study will evaluate the effectiveness of financial incentives in improving maintenance of weight loss. We propose a 3-arm randomized controlled trial in which 190 participants who lose at least 5 kgs in a weight loss program will be randomized to one of the following: 1) daily weigh-ins and weekly feedback, 2) daily weigh-ins, weekly feedback, and a weekly constant lottery based financial incentive, 3) daily weigh-ins,weekly feedback, and a weekly escalating lottery-based financial incentive.

Study participants will be obese volunteers recruited from a major community-based weight loss program (Weight Watchers), who have lost at least 5kg during the 4-6 months prior to enrolling in the study. Upon enrollment, these participants will have an active online membership with Weight Watchers. Among these participants, the following will be assessed: 1. Assess the effectiveness of escalating lottery rewards, relative to the control group, on maintenance of weight loss; 2. The effectiveness of constant lottery rewards, relative to the control group, on maintenance of weight loss; 3. Assess the comparative effectiveness of increasing rewards versus constant rewards on weight loss on maintenance of weight loss; 4. The degree to which weight loss is maintained in the intervention groups relative to usual care during the 6 months following the cessation of the interventions (Phase II).

During Phase I, incentives will be provided to some study participants (constant and escalating lottery arms) for the first 6 months and subjects will be followed for 6 more months to examine effects following cessation of incentives.

Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Single Blind (Investigator), Primary Purpose: Health Services Research




Financial Incentive


Not yet recruiting


University of Pennsylvania

Results (where available)

View Results


Published on BioPortfolio: 2015-09-03T00:23:22-0400

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