School of Geography, Queen Mary, University of London, Mile End Road, London E1 4NS, UK.
J Epidemiol Community Health. 2013 Jan;67(1):106-12. doi: 10.1136/jech-2012-201481. Epub 2012 Sep 21.
In 2008, the Healthy Community Challenge Fund commissioned nine 'healthy towns' in England to implement and evaluate community-based environmental interventions to prevent obesity. This paper examines the role of evidence in informing intervention development, innovation and the potential for programmes to contribute to the evidence base on the effectiveness of interventions that tackle population obesity.
Twenty qualitative interviews with local programme stakeholders and national policy actors were conducted. Interview transcripts were coded and thematically analysed. Initial analyses were guided by research questions regarding the nature and role of evidence in the development and implementation of the healthy towns programme and the capacity for evidence generation to inform future intervention design, policy and practice.
Stakeholders relied on local anecdotal and observational evidence to guide programme development. While the programme was considered an opportunity to trial new and innovative approaches, the requirement to predict likely health impacts and adopt evidence-based practice was viewed contradictory to this aim. Stakeholders believed there were missed opportunities to add to the existing empirical evidence base due to a lack of clarity and planning, particularly around timing, in local and national evaluations.
A strong emphasis on relying on existing evidence-based practice and producing positive impacts and outcomes may have impeded the opportunity to implement truly innovative programmes because of fear of failure. Building more time for development, implementation and evaluation into future initiatives would maximise the use and generation of robust and relevant evidence for public health policy and practice.
2008 年,健康社区挑战赛基金委托英格兰的 9 个“健康城镇”实施和评估基于社区的环境干预措施,以预防肥胖。本文研究了证据在为干预措施的制定、创新和为解决人口肥胖问题的干预措施的有效性提供证据基础的潜力提供信息方面的作用。
对当地项目利益相关者和国家政策制定者进行了 20 次定性访谈。对访谈记录进行了编码和主题分析。初始分析是根据关于健康城镇计划的制定和实施过程中证据的性质和作用的研究问题以及生成证据以告知未来干预设计、政策和实践的能力来指导的。
利益相关者依靠当地的传闻和观察证据来指导项目的开展。虽然该计划被认为是试验新的和创新方法的机会,但预测可能的健康影响并采用基于证据的实践的要求被认为与这一目标相矛盾。利益相关者认为,由于当地和国家评估中缺乏明确性和规划,尤其是在时间安排方面,存在错过为现有经验证据基础增砖添瓦的机会。
由于担心失败,强烈依赖现有的基于证据的实践和产生积极影响和结果的做法,可能会阻碍实施真正创新计划的机会。在未来的计划中为开发、实施和评估投入更多时间,将最大限度地利用和生成与公共卫生政策和实践相关的稳健证据。