Cancer Research UK Health Behaviour Research Centre, University College London, London, UK.
Psychol Health. 2012;27(9):1118-33. doi: 10.1080/08870446.2012.685739. Epub 2012 May 14.
Use of nicotine replacement therapy (NRT) for smoking reduction (SR) is linked to higher quit attempt rates than SR without NRT. This study aimed to assess the possible mediating roles of confidence in ability to quit, enjoyment of smoking and motivation to quit in this association.
Cross-sectional survey.
Smokers were asked if they were currently attempting SR, and if they were, whether they were using NRT. Motivation to stop, enjoyment of smoking, confidence in ability to stop, and previous quit attempts, were also assessed.
There was no evidence that confidence in ability to quit or enjoyment of smoking mediated the association between the use of NRT for SR and attempts to quit. Only motivation to stop partially mediated between the use of NRT for SR and attempts to stop (indirect effect: odds ratio 1.08, p < 0.001).
Although this study is limited by its cross-sectional design, the findings point towards the possibility that the use of NRT to aid SR may promote attempts to stop through increasing motivation to quit but not by increasing confidence or by reducing enjoyment of smoking. Longitudinal studies are required to draw firmer conclusions about the possible mediating effects of motivation to quit.
与不使用尼古丁替代疗法（NRT）的减烟（SR）相比，使用 NRT 进行 SR 与更高的戒烟尝试率相关。本研究旨在评估在这种关联中，戒烟信心、吸烟愉悦感和戒烟动机的可能中介作用。
横断面调查。
询问吸烟者目前是否正在尝试 SR，如果是，他们是否正在使用 NRT。还评估了戒烟动机、吸烟愉悦感、戒烟能力信心和既往戒烟尝试。
没有证据表明戒烟信心或吸烟愉悦感在使用 NRT 进行 SR 与戒烟尝试之间的关联中起中介作用。只有戒烟动机在使用 NRT 进行 SR 与戒烟尝试之间部分起中介作用（间接效应：比值比 1.08，p < 0.001）。
尽管本研究受到其横断面设计的限制，但研究结果表明，使用 NRT 辅助 SR 可能通过增加戒烟动机来促进戒烟尝试，而不是通过增加信心或减少吸烟愉悦感。需要进行纵向研究，以更确定地得出关于戒烟动机的可能中介作用的结论。
