BWHealthy Weight Pilot Study: A randomized controlled trial to improve weight-loss maintenance using deposit contracts in the workplace
Objective: Deposit contracts, where participants “bet” on achieving a goal and get their money back only if successful, have been shown to be effective for short-term weight-loss. This pilot study examined their effect on weight-loss maintenance. Methods: From 2016 to 2018, we conducted a pilot, 50-...
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2020-03-01
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Series: | Preventive Medicine Reports |
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doaj-8a703fc6abe6419b9a11d0baffb629762020-11-25T00:32:38ZengElsevierPreventive Medicine Reports2211-33552020-03-0117BWHealthy Weight Pilot Study: A randomized controlled trial to improve weight-loss maintenance using deposit contracts in the workplaceLauren P. Cleveland0Michael W. Seward1Denise Simon2Sheryl L. Rifas-Shiman3Kristina H. Lewis4Carin Bennett-Rizzo5Florencia Halperin6Katherine D. McManus7Jason P. Block8Division of Chronic Disease Research Across the Lifecourse (CoRAL), Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, Boston, MA, United StatesDivision of Chronic Disease Research Across the Lifecourse (CoRAL), Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, Boston, MA, United StatesDivision of Chronic Disease Research Across the Lifecourse (CoRAL), Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, Boston, MA, United StatesDivision of Chronic Disease Research Across the Lifecourse (CoRAL), Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, Boston, MA, United StatesDivision of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, NC, United StatesOccupational Health Department, Brigham and Women’s Hospital, Boston, MA, United StatesDivision of Endocrinology, Diabetes, and Hypertension, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United StatesDepartment of Nutrition, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United StatesDivision of Chronic Disease Research Across the Lifecourse (CoRAL), Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, Boston, MA, United States; Corresponding author at: Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, 401 Park Drive, Boston, MA 02215, United States.Objective: Deposit contracts, where participants “bet” on achieving a goal and get their money back only if successful, have been shown to be effective for short-term weight-loss. This pilot study examined their effect on weight-loss maintenance. Methods: From 2016 to 2018, we conducted a pilot, 50-week randomized controlled trial among 42 hospital employees (19 intervention and 23 control), in Boston, Massachusetts, who lost ≥10 lb (4.5 kg) in the two years prior to enrollment. Participants were recruited primarily in-person. Both control and intervention participants were asked to attend a weigh in weekly and received weekly email communication. Intervention participants also entered into a deposit contract to maintain baseline weight within ≤2 lb (0.9 kg). We examined weight change from baseline to 50 weeks (primary outcome) and maintenance of baseline weight at 50 weeks (secondary outcome; binary – yes v. no). Participants completed baseline and follow-up surveys and received incentives for completion. Results: At baseline, mean (SD) weight was 83.2 (15.5 kg) among intervention and 80.7 (14.5 kg) among control participants. After 50 weeks, intervention participants had slightly less but non-significant weight gain (adjusted β −1.12 kg; 95% CI −5.28, 3.05) than control participants; 73.7% of intervention v. 39.1% of control participants met their weight-loss maintenance goal by study end (adjusted OR 4.78; 95% CI 1.01, 22.71). Conclusions: A deposit contract was not associated with differences in weight but led to more participants meeting their weight-loss maintenance goals; a deposit contract for weight-loss maintenance should be tested in a full-scale intervention. Most intervention participants viewed the deposit contract as acceptable. Keywords: Obesity, Weight-loss maintenance, Deposit contracthttp://www.sciencedirect.com/science/article/pii/S2211335520300218 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lauren P. Cleveland Michael W. Seward Denise Simon Sheryl L. Rifas-Shiman Kristina H. Lewis Carin Bennett-Rizzo Florencia Halperin Katherine D. McManus Jason P. Block |
spellingShingle |
Lauren P. Cleveland Michael W. Seward Denise Simon Sheryl L. Rifas-Shiman Kristina H. Lewis Carin Bennett-Rizzo Florencia Halperin Katherine D. McManus Jason P. Block BWHealthy Weight Pilot Study: A randomized controlled trial to improve weight-loss maintenance using deposit contracts in the workplace Preventive Medicine Reports |
author_facet |
Lauren P. Cleveland Michael W. Seward Denise Simon Sheryl L. Rifas-Shiman Kristina H. Lewis Carin Bennett-Rizzo Florencia Halperin Katherine D. McManus Jason P. Block |
author_sort |
Lauren P. Cleveland |
title |
BWHealthy Weight Pilot Study: A randomized controlled trial to improve weight-loss maintenance using deposit contracts in the workplace |
title_short |
BWHealthy Weight Pilot Study: A randomized controlled trial to improve weight-loss maintenance using deposit contracts in the workplace |
title_full |
BWHealthy Weight Pilot Study: A randomized controlled trial to improve weight-loss maintenance using deposit contracts in the workplace |
title_fullStr |
BWHealthy Weight Pilot Study: A randomized controlled trial to improve weight-loss maintenance using deposit contracts in the workplace |
title_full_unstemmed |
BWHealthy Weight Pilot Study: A randomized controlled trial to improve weight-loss maintenance using deposit contracts in the workplace |
title_sort |
bwhealthy weight pilot study: a randomized controlled trial to improve weight-loss maintenance using deposit contracts in the workplace |
publisher |
Elsevier |
series |
Preventive Medicine Reports |
issn |
2211-3355 |
publishDate |
2020-03-01 |
description |
Objective: Deposit contracts, where participants “bet” on achieving a goal and get their money back only if successful, have been shown to be effective for short-term weight-loss. This pilot study examined their effect on weight-loss maintenance. Methods: From 2016 to 2018, we conducted a pilot, 50-week randomized controlled trial among 42 hospital employees (19 intervention and 23 control), in Boston, Massachusetts, who lost ≥10 lb (4.5 kg) in the two years prior to enrollment. Participants were recruited primarily in-person. Both control and intervention participants were asked to attend a weigh in weekly and received weekly email communication. Intervention participants also entered into a deposit contract to maintain baseline weight within ≤2 lb (0.9 kg). We examined weight change from baseline to 50 weeks (primary outcome) and maintenance of baseline weight at 50 weeks (secondary outcome; binary – yes v. no). Participants completed baseline and follow-up surveys and received incentives for completion. Results: At baseline, mean (SD) weight was 83.2 (15.5 kg) among intervention and 80.7 (14.5 kg) among control participants. After 50 weeks, intervention participants had slightly less but non-significant weight gain (adjusted β −1.12 kg; 95% CI −5.28, 3.05) than control participants; 73.7% of intervention v. 39.1% of control participants met their weight-loss maintenance goal by study end (adjusted OR 4.78; 95% CI 1.01, 22.71). Conclusions: A deposit contract was not associated with differences in weight but led to more participants meeting their weight-loss maintenance goals; a deposit contract for weight-loss maintenance should be tested in a full-scale intervention. Most intervention participants viewed the deposit contract as acceptable. Keywords: Obesity, Weight-loss maintenance, Deposit contract |
url |
http://www.sciencedirect.com/science/article/pii/S2211335520300218 |
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