Johnson F Reed, Manjunath Ranjani, Mansfield Carol A, Clayton Laurel J, Hoerger Thomas J, Zhang Ping
RTI-UNC Center for Excellence in Health Promotion Economics, RTI International, 3040 Cornwallis Road, P.O. Box 12194, Research Triangle Park, NC 27709, USA.
Diabetes Care. 2006 Jun;29(6):1351-6. doi: 10.2337/dc05-2221.
The purpose of this study was to estimate how much at-risk individuals are willing to pay for type 2 diabetes primary prevention programs.
An Internet-based, choice-format conjoint survey was presented to individuals at elevated risk for type 2 diabetes. Hypothetical diabetes risk-reduction programs included seven features: diet, exercise, counseling, medication, weight loss goal, risk reduction, and program costs. The sample included 582 individuals aged > or =45 years, two-thirds of whom were obese. Conditional logit models were used to calculate participants' willingness to pay for risk reduction programs. Each respondent's self-assessed risk of developing diabetes was compared with an objective measure based on a diabetes screening tool.
Many respondents underestimated their personal risk of developing diabetes. Those with a low perceived risk were less likely to indicate that they would participate in a diabetes prevention program. Individuals had the strongest preference for programs with large weight loss goals, fewer restrictions on diet, and larger reductions in the risk of diabetes. Respondents were willing to pay approximately $1,500 over 3 years to participate in a lifestyle intervention program similar to the Diabetes Prevention Program. Individuals with a high perceived risk were willing to pay more than individuals with lower perceived risk.
Many individuals will be willing to participate in interventions to delay or prevent diabetes if the interventions are subsidized, but most will be unwilling to pay the full program cost. Our results also offer insights for designing risk-reduction programs that appeal to potential participants.
本研究旨在评估糖尿病高危个体为2型糖尿病一级预防项目愿意支付的费用。
对2型糖尿病高危个体开展了一项基于网络的、选择格式的联合调查。假设的糖尿病风险降低项目包括七个特征:饮食、运动、咨询、药物治疗、体重减轻目标、风险降低和项目成本。样本包括582名年龄≥45岁的个体,其中三分之二为肥胖者。使用条件logit模型计算参与者为风险降低项目愿意支付的费用。将每位受访者对患糖尿病风险的自我评估与基于糖尿病筛查工具的客观测量结果进行比较。
许多受访者低估了自己患糖尿病的个人风险。那些认为风险较低的人不太可能表示会参与糖尿病预防项目。个体对具有较大体重减轻目标、饮食限制较少且糖尿病风险降低幅度较大的项目偏好最强。受访者愿意在3年内支付约1500美元来参与一个类似于糖尿病预防项目的生活方式干预项目。认为风险较高的个体比认为风险较低的个体愿意支付更多。
如果干预措施得到补贴,许多个体愿意参与干预以延缓或预防糖尿病,但大多数人不愿意支付项目的全部费用。我们的结果也为设计吸引潜在参与者的风险降低项目提供了见解。