Purpose-guided trial design (PGTD) is a novel heuristic framework for planning randomized controlled trials of health-related behavioral interventions. Its use helps to ensure that the study design and the control or comparison group are compatible with the primary purpose of the trial. When used in conjunction with the recently developed pragmatic model for comparator selection in health-related behavioral trials (Freedland et al., 2019), the PGTD framework can help to resolve uncertainties, disagreements, and controversies about the comparators that are used in behavioral randomized controlled trials. For example, PGTD can help to answer questions about whether, when, and how to control for attention in behavioral trials. The PGTD framework can be used to evaluate published trials, but it is primarily intended for use as a behavioral trial planning tool. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

中文翻译：

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与健康相关的行为干预研究中的针对目的的试验设计。

目的指导试验设计（PGTD）是一种新颖的启发式框架，用于规划与健康相关的行为干预措施的随机对照试验。它的使用有助于确保研究设计和对照组或对照组与试验的主要目的兼容。当与最近开发的实用模型在健康相关的行为试验中选择比较器时结合使用时（Freedland et al。，2019），PGTD框架可以帮助解决行为随机化中使用的比较器的不确定性，分歧和争议对照试验。例如，PGTD可以帮助回答有关在行为试验中是否，何时以及如何控制注意力的问题。PGTD框架可用于评估已发布的试验，但它主要是用作行为试验计划工具。（PsycInfo数据库记录（c）2020 APA，保留所有权利）。