University Of Pennsylvania Weight Loss Study
This is a 4-arm, randomized controlled trial to evaluate the effectiveness of financial incentives to motivate and sustain long-term weight loss. The study will recruit eligible employees at a large health management company to participate in a 6-month weight loss program and have weight measurements for an additional 3-month follow-up period. The primary outcome measure in this randomized controlled trial will be pounds of weight lost. The experimental groups will include variations of deposit contracts (participants put their own money at risk, and lose that money if they fail to achieve their weight loss goal) and fixed payments. The use of deposit contracts is a powerful mechanism for inducing behavior change that is based on loss aversion, a psychological concept first described by Nobel Prize winner Daniel Kahneman and Amos Tversky in 1979. A deposit contract takes advantage of the fact that people typically feel the pain of a loss more than the pleasure of a gain, increasing ones motivation to reach a goal.
The study hypotheses are 1) mean weight loss will be greater in all intervention groups compared to the control group by the end of 24 weeks; and 2) individuals in the intervention groups will have a lower mean weight at the end of the 3-month follow-up period than individuals in the control group.
연구 개요
상태
정황
연구 유형
등록 (실제)
단계
- 해당 없음
연락처 및 위치
연구 장소
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Pennsylvania
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Philadelphia, Pennsylvania, 미국, 19104
- University of Pennsylvania
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참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion Criteria:
- Aged 18 to 70 (inclusive)
- BMI between 30 and 50 (inclusive)
Exclusion Criteria:
- Inability to consent
- No known Illiteracy and/or inability to speak, read, and write English
- Participation in another weight loss program
- Participation in another research study
- Current treatment for drug or alcohol use
- Consumption of 5 alcoholic drinks per day
- Myocardial infarction or stroke within the past 6 months
- Uncontrolled hypertension (defined as BP170 mm Hg systolic or BP110 mm Hg diastolic)
- Current addiction to prescription medicines or street drugs
- Serious psychiatric diagnoses (severe depression, schizophrenia)
- Pregnancy
- Diabetic and using any medicine besides metformin to control blood sugars
- Metastatic cancer
- Unstable medical conditions that would likely prevent the subject from completing the study
- Previous diagnosis of an eating disorder
- History of unsafe weight loss behaviors such as binging or the use of laxatives
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 치료
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 없음(오픈 라벨)
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
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간섭 없음: 1
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실험적: 2
Deposit contract with a 1:1 match
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Daily weigh-in for 24 weeks and if each daily goal met daily deposit amount is paid back with an additional matched amount equal to deposited amount.
Final weigh-in at 36 weeks with no financial incentive or deposit made.
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실험적: 3
Deposit contract with a 2:1 match
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Daily weigh-in for 24 weeks and if each daily goal met daily deposit amount is paid back with an additional matched amount twice the amount equal to deposited amount.
Final weigh-in at 36 weeks with no financial incentive or deposit made.
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실험적: Experimental 4
Deposit contract with no match
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Daily weigh-in for 24 weeks and if each daily goal met the daily deposit amount is paid back.
Final weigh-in at 36 weeks with no financial incentive or deposit made.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Change in Weight
기간: 24 Weeks
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Change in weight between baseline and 24 weeks
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24 Weeks
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공동 작업자 및 조사자
수사관
- 연구 책임자: George Loewenstein, PhD, Carnegie Mellon University
- 연구 의자: Kevin G. Volpp, MD, PhD, University of Pennsylvania
- 연구 책임자: Heather Schofield, MS, Harvard University
간행물 및 유용한 링크
연구 기록 날짜
연구 주요 날짜
연구 시작 (실제)
기본 완료 (실제)
연구 완료 (실제)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (추정)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .
Deposit contract with a 1:1 match에 대한 임상 시험
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