The Cancer Council Victoria, Melbourne, Victoria, Australia.
Addiction. 2012 Mar;107(3):673-82. doi: 10.1111/j.1360-0443.2011.03685.x.
To document accurately the amount of quitting, length of quit attempts and prevalence of plans and serious thought about quitting among smokers.
We used longitudinal data from 7 waves of the International Tobacco Control Policy Evaluation Four Country Survey (ITC-4). We considered point-prevalence data and cumulative prevalence over the 7 years of the study. We also derived annual estimates of quit activity from reports of quit attempts starting only within more recent time-frames, to control for biased recall.
Australia, Canada, the United Kingdom and the United States.
A total of 21,613 smokers recruited across seven waves.
Reported life-time quit attempts, annual quit attempts, length of attempts, time since last attempt started, frequency of aborted attempts, plans to quit and serious thought about quitting.
Around 40.1% (95% CI: 39.6-40.6) of smokers report attempts to quit in a given year and report an average of 2.1 attempts. Based on free recall, this translates to an average annual quit attempt rate of 0.82 attempts per smoker. Estimates derived only from the preceding month to adjust for recall bias indicate an annual rate of approximately one attempt per smoker. There is a high prevalence of quit-related activity, with more than a third of smokers reporting thoughts or actions related to quitting in a given month. More than half the surveyed smokers eventually succeeded in quitting for at least 1 month, and a majority of these for over 6 months.
Smokers think a great deal about stopping and make many unsuccessful quit attempts. Many have been able to last for extended periods and yet they still relapsed. More attention needs to be focused on translating quit-related activity into long-term abstinence.
准确记录吸烟者戒烟的次数、戒烟尝试的持续时间以及戒烟计划和认真考虑戒烟的流行率。
我们使用了来自国际烟草控制政策评估四国调查（ITC-4）的 7 个波次的纵向数据。我们考虑了时点流行率数据和研究 7 年期间的累计流行率。我们还从仅在最近时间段内报告开始戒烟尝试的报告中得出了每年戒烟活动的估计值，以控制回忆偏差。
澳大利亚、加拿大、英国和美国。
来自七个波次的共 21613 名吸烟者。
报告的终生戒烟尝试、每年的戒烟尝试、尝试的持续时间、上次尝试开始的时间、尝试失败的频率、戒烟计划和认真考虑戒烟。
大约 40.1%（95%CI：39.6-40.6）的吸烟者报告在特定年份有戒烟尝试，平均尝试 2.1 次。根据自由回忆，这相当于平均每年每位吸烟者尝试戒烟的比例为 0.82 次。仅从前一个月调整回忆偏差得出的估计值表明，每年每位吸烟者尝试戒烟的比例约为一次。与戒烟相关的活动的流行率很高，超过三分之一的吸烟者在特定月份报告了与戒烟相关的想法或行动。超过一半的被调查吸烟者最终成功戒烟至少 1 个月，其中大多数人戒烟超过 6 个月。
吸烟者非常关注戒烟，并进行了多次不成功的戒烟尝试。许多人已经能够持续很长时间，但他们仍会复吸。需要更加关注将与戒烟相关的活动转化为长期戒烟。
