Institute for Global Health and Development, Peking University, Beijing, China.
DeZhou Center for Disease Control and Prevention, Beijing, China.
J Glob Health. 2023 Oct 27;13:04133. doi: 10.7189/jogh.13.04133.
Emerging evidence supports the efficacy of mobile phone interventions for smoking cessation. However, behaviour changes of smokers who fail to reach abstinence and the related psychological mechanism are still understudied. We aimed to evaluate the efficacy of a behaviour change theory-based smoking cessation intervention delivered through personalised text messages from the perspective of smokers who fail to reach abstinence.
We conducted a two-arm, double-blind, randomised controlled trial, with the intervention group receiving personalised text messages developed specifically for this study, and the control group receiving non-personalised ones related to smoking cessation. These messages were sent over a period of three months. We looked at three outcomes: changes in smoking frequency, in smoking amount, and in protection motivation theory (PMT) construct scores.
We obtained smoking cessation results for 722 participants who went through the randomisation process (intervention: 360, control: 362; block randomisation design). Overall, 32.3% of baseline daily smokers in the intervention group and 20.0% in the control group changed to weekly smokers during the follow-up period (P < 0.001), while 43.4% of consistent daily smokers in the intervention group and 32.8% in the control group continuously reduced their smoking amount (P < 0.001). We observed associations between the intrinsic rewards of smoking and changes from daily to weekly smoking, the perceived severity of smoking and reductions in smoking amount, as well as the self-efficacy of quitting and changes from daily to weekly smoking/reductions in smoking amount.
We found that a personalised text message-based intervention was more likely to decrease the frequency and amount of smoking in smokers who failed to reach abstinence compared to a non-personalised one. We also explored the possible psychological mechanism of such positive effects. Here we provide evidence for countries to consider the promotion of smoking cessations using behaviour theory-driven personalised text messages, which may be more cost-effective than traditional approaches.
Peking University: ChiCTR2100041942.
越来越多的证据表明，手机干预措施对戒烟是有效的。然而，对于未能达到戒烟目标的吸烟者的行为变化及其相关心理机制，仍缺乏深入研究。本研究旨在从未能达到戒烟目标的吸烟者的角度，评估基于行为改变理论的戒烟干预措施通过个性化短信发送的效果。
我们进行了一项双臂、双盲、随机对照试验，干预组接受了专门为此研究开发的个性化短信，对照组接受了与戒烟相关的非个性化短信。这些短信在三个月的时间内发送。我们观察了三个结果：吸烟频率、吸烟量和保护动机理论（PMT）结构得分的变化。
我们获得了 722 名经历随机分组过程的参与者的戒烟结果（干预组：360 名，对照组：362 名；块随机设计）。总体而言，干预组中有 32.3%的基线每日吸烟者和对照组中有 20.0%的基线每日吸烟者在随访期间转为每周吸烟者（P<0.001），而干预组中有 43.4%的持续每日吸烟者和对照组中有 32.8%的持续每日吸烟者持续减少吸烟量（P<0.001）。我们观察到吸烟的内在奖励与从每日吸烟到每周吸烟的变化、吸烟的感知严重性与吸烟量的减少以及戒烟的自我效能与从每日吸烟到每周吸烟/吸烟量减少之间的关联。
我们发现，与非个性化短信相比，基于个性化短信的干预措施更有可能降低未能达到戒烟目标的吸烟者的吸烟频率和吸烟量。我们还探讨了这种积极效果的可能心理机制。在这里，我们为各国提供了使用行为理论驱动的个性化短信促进戒烟的证据，这可能比传统方法更具成本效益。
北京大学：ChiCTR2100041942。
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