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Philadelphia, Pennsylvania 19104


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

Study summary:

The study will evaluate the effectiveness of financial incentives in improving maintenance of weight loss. The investigators propose a 2-arm randomized controlled trial in which 258 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 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 over the ensuing 6 months (Phase I); 2.The degree to which weight loss is maintained in the intervention group 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 (escalating lottery arm) for the first 6 months and participants will be followed for 6 more months to examine effects following cessation of incentives.


Inclusion Criteria: - Adults age 30-80 - BMI between 30 and 45 prior to starting Weight Watchers - Have a documented weight loss of at least 5kg in the past 4-6 months before enrolling - Stable health - Have an online Weight Watchers membership Exclusion Criteria: - Substance abuse - Bulimia nervosa or related behaviors - Pregnancy or breast feeding - Medical contraindications to counseling about diet, physical activity, or weight reduction - Unstable mental illness - Screen positive for pathological gambling on the basis of the 10 item DSM-IV criteria (excluded if meets 5 or more criteria) - Individuals unable to read consent forms or fill out surveys in English



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Location Contact:

Philadelphia, Pennsylvania 19104
United States

There is no listed contact information for this specific location.

Site Status: N/A

Data Source: ClinicalTrials.gov

Date Processed: January 21, 2020

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