Improving Dietary Behavior Through Tailored Messages

通过定制信息改善饮食行为

• 批准号: 7415172
• 负责人: ROBERT H FRIEDMAN
• 金额: $ 57.72万
• 依托单位: BOSTON MEDICAL CENTER
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7415172
• 关键词: Affect; American Heart Association; Area; Behavior; Behavioral; Boston; Cardiovascular Diseases; Cardiovascular system; Characteristics; Communication; Computers; Consumption; Control Groups; Diet; Dietary Intervention; Digit structure; Dimensions; Disease; Eating; Effectiveness; Effectiveness of Interventions; Evaluation; Fruit; Goals; Health Professional; Health behavior; Health behavior change; Individual; Intake; Internet; Intervention; Investigation; Link; Maintenance; Mediation; Medical center; Modality; Modeling; Online Systems; Outcome; Pamphlets; Pathway interactions; Patients; Perception; Persons; Population; Prevalence; Printing; Public Health; Randomized; Randomized Clinical Trials; Recruitment Activity; Research; Research Personnel; Rhode Island; Sampling; Schools; Secondary Prevention; Severities; Structure; Study Subject; System; Technology; Telecommunications; Telephone; Testing; Text; Time; Universities; arm; base; behavior change; cardiovascular disorder risk; communication theory; comparative efficacy; cost; design; follow-up; fruits and vegetables; improved; instrument; intervention effect; nutrition; population based; programs; saturated fat; smoking cessation; sound; theories; therapy design

DESCRIPTION (provided by applicant): Health behavior change interventions delivered over the Internet or other computer-based channels of communication are increasingly available. Recent evaluations of some interventions that use these channels indicate that they have the potential of combining the low cost and reach of public health interventions and the effectiveness of interventions delivered by health professionals. Yet few Internet and other computer-based interventions have been rigorously evaluated, and no studies have compared the efficacy of interventions delivered over different technology-based communication channels. We plan to conduct a study (1) to determine the competitive advantage of different automated communication channels for delivering a standardized dietary behavior change intervention for reducing cardiovascular disease risk and (2) to advance understanding about behavior theory constructs and communication channel characteristics that might be associated with intervention utilization and efficacy. To do so, we will compare totally automated, population-based tailored (1) print, (2) telephony, and (3) Web interventions for promoting dietary behavior change. These interventions will use the same behavioral theoretical structure (the Transtheoretical Model) and similar content, designed to reduce cardiovascular disease risk by promoting intake of fruit and vegetables and reducing consumption of saturated fat. Each of these three interventions have been shown to be efficacious compared to no intervention control conditions in randomized clinical trials. We will recruit 2,240 study subjects with high saturated fat and low fruit and vegetable intake from a list- assisted national random digit dial sample. They will be randomly assigned to four study groups (560 per group): (1) control (which will receive an informational booklet on healthy eating), (2) tailored print (PRINT- DIET), (3) tailored telephony (Telephone Linked Communication [TLC-DIET]), and (4) tailored Web (WEB- DIET). For each study subject, the intervention period will be 12 months, followed by a 12-month observation period to assess maintenance of intervention effects. For this study, we will develop a new instrument to assess the users' evaluation of the effectiveness of the channel of communications used by the intervention they received (print, telephony or Web). The instrument will focus on eight communication dimensions identified by Salmon and Atkin (2003). We will evaluate each of the three interventions compared to the control condition and to each other regarding their effects on the two dietary outcomes at 12 and 24 months follow-up. We will also investigate whether specific constructs from behavior change and communications theories explain use of the three interventions and their effects on dietary behavior outcomes.

描述（由申请人提供）：通过互联网或其他基于计算机的通信渠道提供的健康行为改变干预措施越来越多。最近对使用这些渠道的一些干预措施进行的评价表明，它们有可能将公共卫生干预措施的低成本和覆盖面与卫生专业人员提供的干预措施的有效性结合起来。然而，很少有互联网和其他基于计算机的干预措施得到了严格的评估，也没有研究比较了通过不同的基于技术的通信渠道提供的干预措施的功效。我们计划进行一项研究，以确定不同的自动化沟通渠道的竞争优势，提供标准化的饮食行为改变干预，以降低心血管疾病的风险和（2）推进对行为理论结构和沟通渠道特征的理解，这些特征可能与干预的利用和有效性有关。为此，我们将比较完全自动化的，基于人群的定制（1）打印，（2）电话，（3）网络干预，以促进饮食行为的改变。这些干预措施将使用相同的行为理论结构（跨理论模型）和类似的内容，旨在通过促进水果和蔬菜的摄入量和减少饱和脂肪的摄入来降低心血管疾病的风险。在随机临床试验中，与无干预对照条件相比，这三种干预措施中的每一种都被证明是有效的。我们将从列表辅助的国家随机数字拨号样本中招募2,240名高饱和脂肪和低水果和蔬菜摄入量的研究受试者。他们将被随机分配到四个研究组（每组560人）：（1）对照组（将收到一本关于健康饮食的信息手册），（2）定制印刷品（PRINT- DIET），（3）定制电话（电话链接通信[TLC-DIET]）和（4）定制网络（WEB- DIET）。对于每例研究受试者，干预期为12个月，随后为12个月的观察期，以评估干预效果的维持情况。在这项研究中，我们将开发一种新的工具来评估用户对他们所接受的干预（印刷品、电话或网络）所使用的沟通渠道的有效性的评价。该工具将侧重于Salmon和Atkin（2003年）确定的八个沟通层面。我们将在12个月和24个月的随访中评估三种干预措施中的每一种与对照条件的比较以及它们对两种饮食结果的影响。我们还将调查行为改变和沟通理论的具体结构是否解释了三种干预措施的使用及其对饮食行为结果的影响。