Financial incentive-based approaches for weight loss: a randomized trial.
Financial incentive-based approaches for weight loss: a randomized trial.
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DOI：
10.1001/jama.2008.804
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发表时间：
2008-12-10
影响因子：
120.7
通讯作者：
Loewenstein, George
中科院分区：
文献类型：
--
作者：
Volpp, Kevin G.;John, Leslie K.;Troxel, Andrea B.;Norton, Laurie;Fassbender, Jennifer;Loewenstein, George
由于肥胖症的健康后果，确定有效的治疗肥胖症的策略既是一个临床挑战，也是一个公共卫生优先事项。为了确定行为经济学家确定的常见决策错误，如前景理论、损失厌恶和后悔是否可以用来设计有效的减肥干预措施。三组随机对照试验，参与者被随机分为两组，一组接受常规护理(每月称一次体重)，另一组接受经济奖励。其中一个激励部门使用存款合同，参与者将自己的钱投入风险(研究结果为1：1)，如果他们减肥失败，他们将失去这些钱。第二种是基于彩票的奖励，即达到减肥目标的参与者每天有五分之一的机会赢得小额奖励(10美元)，有100%的机会赢得大额奖励(100美元)。所有参与者都被给予了为期16周的每周1磅的减肥目标，结果使用方差模型的意向处理分析进行分析。费城退伍军人事务医疗中心。57例体重指数在30~40岁之间，年龄在30~70岁之间，无参与研究禁忌症的患者。16周后体重减轻。两个激励组的参与者都比控制组的参与者减掉了更多的体重(3.9磅)；(彩票=13.1磅；彩票的p值比对照组0.014；存款合同=14.0磅，p值比对照组0.003)。47.4%的存款合同参与者和52.6%的彩票参与者达到了16磅的减肥目标，而对照组的这一比例为10.5%(p值0.014)。到7个月结束时，体重大量恢复；然而，激励参与者的体重明显低于他们在研究开始时的体重，而对照组没有。在研究的减肥阶段，失访率很低(7.0%)，这表明两种激励系统都成功地保持了参与者对研究的投入。基于行为经济学概念的激励方法可能会在减少肥胖相关疾病的发生率方面产生重大影响。
Identifying effective strategies for treating obesity is both a clinical challenge and a public health priority due to the health consequences of obesity. To determine whether common decision errors identified by behavioral economists such as prospect theory, loss aversion, and regret could be used to design an effective weight loss intervention. 3-arm randomized controlled trial in which participants were randomized to either usual care (weigh ins once a month) or one of two financial incentives arms. One incentive arm used deposit contracts in which participants put their own money at risk (matched 1:1 by the study) which they would lose if they failed to lose weight. The second used lottery-based incentives in which participants who met the weight loss target had each day a 1 in 5 chance of winning a small reward ($10) and a 1 in 100 chance of winning a large reward ($100). All participants were given a weight loss goal of 1 pound per week for 16 weeks, and results were analyzed using intention-to-treat analysis of variance models. Philadelphia Veterans Affairs Medical Center. 57 patients with BMIs between 30-40 aged between 30 and 70, with no contraindications for study participation. Weight loss after 16 weeks. Participants in both incentive groups lost significantly more weight than participants in the control group (3.9 pounds); (Lottery = 13.1 lbs; p-value for lottery vs. control .014; deposit contract = 14.0 lbs, p-value vs. control .003). 47.4% of deposit contract participants and 52.6% of lottery arm participants met the 16-pound weight loss goal compared to 10.5% in the control group (p-value 0.014.). By the end of 7 months, substantial amounts of weight were regained; however, incentive participants weighed significantly less than they did at the study start whereas controls did not. Low lost to follow-up rates (7.0%) during the weight loss phase of the study suggest that both incentive systems were successful in keeping participants engaged in the study. Incentive approaches based on behavioral economic concepts could have a major impact in reducing the incidence of obesity-related illnesses.
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影响因子：
158.5
作者：
Knowler, WC;Barrett-Connor, E;Nathan, DM
通讯作者：
Nathan, DM
影响因子：
120.7
作者：
Flegal, KM;Carroll, MD;Johnson, CL
通讯作者：
Johnson, CL
DOI：
10.1097/jom.0b013e31813c6dcb
发表时间：
2007-09-01
影响因子：
3.2
作者：
Finkelstein, Eric A.;Linnan, Laura A.;Birken, Ben E.
通讯作者：
Birken, Ben E.
影响因子：
13.7
作者：
Laibson, D
通讯作者：
Laibson, D
影响因子：
6.1
作者：
KAHNEMAN, D;TVERSKY, A
通讯作者：
TVERSKY, A