Institute of Psychological Sciences, University of Leeds, Leeds, UK.
BMC Public Health. 2013 Jan 19;13:54. doi: 10.1186/1471-2458-13-54.
The current literature suggests that forming implementation intentions (simple 'if-then' plans) about how to refuse the offer of a cigarette may be an effective intervention to reduce smoking initiation in adolescents. This study is a pragmatic trial to test the effectiveness and cost-effectiveness of such an intervention in reducing smoking initiation in a sample of UK adolescents.
METHODS/DESIGN: A cluster randomised controlled trial with at least 36 schools randomised to receive an implementation intention intervention targeting reducing smoking initiation (intervention group) or increasing homework (control group). Interventions will be conducted at the classroom level and be repeated every six months for four years (eight interventions). Objectively assessed (carbon monoxide monitor) and self-reported smoking plus smoking related cognitions (e.g., smoking intentions, attitudes, norms and self-efficacy) will be assessed at baseline and 12, 24, 36 and 48 months post baseline. Objectively assessed smoking at 48 months post baseline will be the primary outcome variable. Health economic analyses will assess life years gained.
The results of the trial will provide information on the impact of a repeated implementation intention for refusing offers of cigarettes on rates of smoking initiation in adolescents.
ISRCTN27596806.
目前的文献表明，制定关于如何拒绝香烟的实施意向（简单的“如果-那么”计划）可能是减少青少年吸烟起始的有效干预措施。本研究是一项实用试验，旨在测试针对减少英国青少年吸烟起始的此类干预措施的有效性和成本效益。
方法/设计：一项聚类随机对照试验，至少有 36 所学校随机分为接受针对减少吸烟起始的实施意向干预组（干预组）或增加家庭作业的控制组（控制组）。干预措施将在课堂层面进行，并在四年内每六个月重复一次（共进行八次干预）。将在基线和 12、24、36 和 48 个月后进行客观评估（一氧化碳监测器）和自我报告的吸烟情况以及与吸烟相关的认知（例如吸烟意图、态度、规范和自我效能）。48 个月后基线的客观评估吸烟将是主要的结果变量。健康经济分析将评估获得的生命年数。
试验结果将提供有关重复实施意向以拒绝香烟的影响的信息，该意向对青少年吸烟起始率的影响。
ISRCTN27596806。
