Abstract Aims It is not known whether the machine‐smoked nicotine yield of usual brand of cigarette smoked is associated with the chances of success of quit attempts. This study aimed to assess this association. Design Prospective study. Setting Republic of Korea. Participants A total of 16 808 male smokers registered for the Quitline between 7 April 2006 and 31 December 2013. Of these, 13 176 participants who were > 19 years of age and provided data on their demographic characteristics, smoking‐related behaviors, nicotine dependence, tobacco brands used and self‐efficacy were included in this study. Measurements Machine‐smoked nicotine yield was based on information provided by tobacco companies on cigarette packages that smokers reported as their usual brand. Ultra‐low nicotine yield was defined as ≤ 0.1 mg machine‐smoked nicotine yield per cigarette, whereas higher nicotine yield was defined as > 0.1 mg machine‐smoked nicotine yield. Participant personal information and self‐reported continuous abstinence at 1‐month, 6‐month and 1‐year follow‐up were recorded in electronic databases. Findings Continuous abstinence rates in the ultra‐low nicotine yield versus higher nicotine yield groups were, respectively, 40.7 versus 34.6% at 1 month [odds ratio (OR) = 1.22, 95% confidence interval (CI) = 1.12–1.33], 22.7 versus 18.8% at 6 months (OR = 1.20, 95% CI = 1.08–1.32) and 19.5 versus 16.6% (OR = 1.19, 95% CI = 1.10–1.29) at 1 year. The association between ultra‐low nicotine yield cigarette smoking and successful quitting was stronger among the smokers with higher cigarette dependence. Conclusions Male smokers who use the Korean Quitline are more likely to quit successfully if they smoke ultra‐low nicotine yield cigarettes than if they smoke higher nicotine yield cigarettes.

中文翻译：

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韩国戒烟热线用户吸食超低尼古丁含量卷烟和其他类型卷烟者的戒烟率比较：一项前瞻性研究


摘要 目的 目前尚不清楚常用品牌香烟的机吸尼古丁含量是否与戒烟尝试的成功机会相关。本研究旨在评估这种关联。设计前瞻性研究。设置大韩民国。参与者 2006 年 4 月 7 日至 2013 年 12 月 31 日期间，共有 16 808 名男性吸烟者登记了戒烟热线。其中，13 176 名参与者年龄为 > 19 岁，并提供了有关其人口特征、吸烟相关行为、尼古丁依赖的数据本研究包括使用的烟草品牌和自我效能。机器吸烟尼古丁含量的测量是基于烟草公司在卷烟包装上提供的信息，吸烟者将其报告为他们常用的品牌。超低尼古丁含量定义为每支香烟机器吸食的尼古丁含量≤0.1毫克，而较高的尼古丁含量定义为每支烟机器吸食的尼古丁含量为> 0.1毫克。参与者的个人信息和自我报告的 1 个月、6 个月和 1 年随访时的持续戒断情况均记录在电子数据库中。结果 1 个月时，超低尼古丁产量组与高尼古丁产量组的持续戒烟率分别为 40.7% 和 34.6% [比值比 (OR) = 1.22，95% 置信区间 (CI) = 1.12–1.33]、22.7 6 个月时为 18.8%（OR = 1.20，95% CI = 1.08–1.32），1 年时为 19.5 与 16.6%（OR = 1.19，95% CI = 1.10–1.29）。在卷烟依赖性较高的吸烟者中，超低尼古丁含量卷烟与成功戒烟之间的关联性更强。 结论 使用韩国戒烟热线的男性吸烟者如果吸食尼古丁含量超低的卷烟，则比吸食尼古丁含量较高的卷烟更有可能成功戒烟。