BACKGROUND Non-communicable chronic diseases are linked to behavioral risk factors (including smoking, poor diet and physical inactivity), so effective behavior change interventions are needed to improve population health. However, uptake and impact of these interventions is limited by methodological challenges. We aimed to identify and achieve consensus on priorities for methodological research in behavioral trials in health research among an international behavioral science community. METHODS An international, Delphi consensus study was conducted. Fifteen core members of the International Behavioral Trials Network (IBTN) were invited to generate methodological items that they consider important. From these, the research team agreed a "long-list" of unique items. Two online surveys were administered to IBTN members (N = 306). Respondents rated the importance of items on a 9-point scale, and ranked their "top-five" priorities. In the second survey, respondents received feedback on others' responses, before rerating items and re-selecting their top five. RESULTS Nine experts generated 144 items, which were condensed to a long-list of 33 items. The four most highly endorsed items, in both surveys 1 (n = 77) and 2 (n = 57), came from two thematic categories:"Intervention development" ("Specifying intervention components" and "Tailoring interventions to specific populations and contexts") and "Implementation" ("How to disseminate behavioral trial research findings to increase implementation" and "Methods for ensuring that behavioral interventions are implementable into practice and policy"). "Development of novel research designs to test behavioral interventions" also emerged as a highly ranked research priority. CONCLUSIONS From a wide array of identified methodological issues, intervention development, implementation and novel research designs are key themes to drive the future behavioral trials' research agenda. Funding bodies should prioritize these issues in resource allocation.

中文翻译：

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Delphi国际共识研究，旨在确定健康研究行为试验中方法学研究的重点。

背景技术非传染性慢性疾病与行为危险因素（包括吸烟，不良饮食和缺乏体育锻炼）有关，因此需要有效的行为改变干预措施以改善人群健康。但是，这些干预措施的采用和影响受到方法论挑战的限制。我们旨在确定国际行为科学界对健康研究中的行为试验方法学研究的优先次序并达成共识。方法进行了国际德尔菲共识研究。邀请了国际行为试验网络（IBTN）的15名核心成员提出了他们认为重要的方法论项目。通过这些，研究团队同意了一个“长名单”的独特项目。对IBTN成员进行了两次在线调查（N = 306）。受访者以9分制对项目的重要性进行了评分，并对其“前五名”的优先级进行了排名。在第二项调查中，受访者在重新评估项目并重新选择前五名之前收到了关于其他人反馈的反馈。结果九位专家生成了144个项目，被浓缩为33个项目的长清单。在调查1（n = 77）和2（n = 57）中，四个最受认可的项目来自两个主题类别：“干预发展”（“指定干预成分”和“针对特定人群和环境量身定制干预措施”） ）和“实施”（“如何传播行为试验研究结果以提高实施率”和“确保行为干预措施可在实践和政策中实施的方法”）。”