A Randomized Trial of Financial Incentives for Maintenance of Weight Loss
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Obesity
- Sponsor
- University of Pennsylvania
- Enrollment
- 191
- Locations
- 1
- Primary Endpoint
- Change in Weight From Baseline to 6 Months
- Status
- Completed
- Last Updated
- 7 years ago
Overview
Brief Summary
This study aims to evaluate the effectiveness of financial incentives in improving and maintaining weight loss.
Detailed Description
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. Among these participants, the following will be assessed: 1. The effectiveness of a daily lottery-based financial incentive, relative to the control group, on weight loss and weight maintenance; 2. The effectiveness of a direct payment incentive, relative to the control group, on maintenance of weight loss; 3. Assess the comparative effectiveness of lottery-based and direct payment financial incentives on weight loss and maintenance; 4. The degree to which weight loss is maintained in the intervention groups relative to usual care during the 6 months following cessation of the intervention will also be determined. During Phase I, incentives will be provided to some study participants (direct payment and lottery arm) for the first 6 months and subjects will be followed for 6 more months to examine effects following cessation of incentives.
Investigators
Eligibility Criteria
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
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
Outcomes
Primary Outcomes
Change in Weight From Baseline to 6 Months
Time Frame: 6 months
Change in Weight From Baseline to 12 Months
Time Frame: 12 months