Evidence map›Paper›PMID 23546562›Full record

Trial reportAnnals of internal medicine2013

Individual- versus group-based financial incentives for weight loss: a randomized, controlled trial.

Jeffrey T Kullgren, Andrea B Troxel, George Loewenstein, David A Asch, Laurie A Norton, Lisa Wesby, Yuanyuan Tao, Jingsan Zhu, Kevin G Volpp

3 registry-linked trialsAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Annals of internal medicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 96 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed, 9 pooled it
25.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT01208350 nacompletednot on this map

Testing Strategies to Encourage Weight Loss in an Employer Setting

TypeinterventionalSponsorUniversity of PennsylvaniaRan2011 to 2014Enrolled105ConditionsWeight LossArmsNo intervention, Group-based payout, Individual payout
NCT02880176 nacompletednot on this mapstarted 2016, after this paper: background citation

Steps to Eliminate Postoperative Problems

TypeinterventionalSponsorUniversity of PennsylvaniaRan2016 to 2019Enrolled34ConditionsBladder CancerArmsFinancial Incentive to Increase Ambulation
NCT03157713 nacompletednot on this mapstarted 2017, after this paper: background citation

Financial Incentive Strategies for Weight Loss in Obese Patients Living in Socioeconomically Disadvantaged Neighborhoods

TypeinterventionalSponsorUniversity of California, Los AngelesRan2017 to 2021Enrolled668ConditionsObeseArmsGoal-Directed Financial Incentives, Enhanced Usual Care, Outcome-based Financial Incentives
3 · Its place in the literature

Who cites it

96 citing papers in PubMed, 9 syntheses or guidelines pooled it, 202 citations in OpenAlex.

  1. Enhancing Weight Loss Programs: A Meta-Analysis of Financial Incentives and Behavior Change Techniques.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026
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36 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 1 country.

Jeffrey T KullgrenVeterans Affairs Center forClinical Management Research, Veterans Affairs Ann Arbor HealthcareSystem, Ann Arbor, MI 48113-0170, USA. jkullgre@med.umich.edu
Andrea B Troxel
George Loewenstein
David A Asch
Laurie A Norton
Lisa Wesby
Yuanyuan Tao
Jingsan Zhu
Kevin G Volpp
VA Center for Clinical Management Research · USUniversity of Michigan–Ann Arbor · USUniversity of Pennsylvania · US

Funding

The Penn Roybal Center on Behavioral Economics and Health: Solving for Scale and Impact with Design Thinking, Digital Platforms, and Dynamic AdaptationP30AG034546 · NIA · UNIVERSITY OF PENNSYLVANIA · PI Alison Meredith Buttenheim · 2009 to 2026
$10.6M
Research BaseP30DK092926 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI MARY ELLEN MICHELE HEISLER, ADESUWA B OLOMU · 2011 to 2026
$10.0M
Developing Interactive Technologies to Improve Research and Health BehaviorRC2AG036592 · NIA · UNIVERSITY OF PENNSYLVANIA · PI ASCH, DAVID A, VOLPP, KEVIN G · 2009 to 2010
$5.4M
CCR NIH HHS RC2103282621NIA NIH HHS P30 AG034546NIDDK NIH HHS P30 DK092926
6 · The paper itself

Abstract

backgroundData on the effectiveness of employer-sponsored financial incentives for employee weight loss are limited.

objectiveTo test the effectiveness of 2 financial incentive designs for promoting weight loss among obese employees.

designRandomized, controlled trial. (ClinicalTrials.gov: NCT01208350)

settingChildren's Hospital of Philadelphia.

participants105 employees with a body mass index between 30 and 40 kg/m2.

intervention24 weeks of monthly weigh-ins (control group; n = 35); individual incentive, designed as $100 per person per month for meeting or exceeding weight-loss goals (n = 35); and group incentive, designed as $500 per month split among participants within groups of 5 who met or exceeded weight-loss goals (n = 35). MEASUREMENTS: Weight loss after 24 weeks (primary outcome) and 36 weeks and changes in behavioral mediators of weight loss (secondary outcomes).

resultsGroup-incentive participants lost more weight than control participants (mean between-group difference, 4.4 kg [95% CI, 2.0 to 6.7 kg]; P < 0.001) and individual-incentive participants (mean between-group difference, 3.2 kg [CI, 0.9 to 5.5 kg]; P = 0.008). Twelve weeks after incentives ended and after adjustment for 3-group comparisons, group-incentive participants maintained greater weight loss than control group participants (mean between-group difference, 2.9 kg [CI, 0.5 to 5.3 kg]; P = 0.016) but not greater than individual-incentive participants (mean between-group difference, 2.7 kg [CI, 0.4 to 5.0 kg]; P = 0.024). LIMITATION: Single employer and short follow-up.

conclusionA group-based financial incentive was more effective than an individual incentive and monthly weigh-ins at promoting weight loss among obese employees at 24 weeks. PRIMARY FUNDING SOURCE: National Institute on Aging.

Indexed as

MotivationRewardWeight LossAdultBehavior TherapyBody Mass IndexEmployee Incentive PlansFemaleGroup ProcessesHealth BehaviorHumansMaleMiddle AgedObesity

Identifiers

PMID23546562
PMCPMC3994977
OpenAlexW2096294278

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.