Impacts of smoke-free public places legislation on youth smoking uptake

虽然禁止在公共场所吸烟通过减少接触二手烟改善了健康状况，但尚不清楚这是否对青少年吸烟有任何影响。特别是，我们不知道这是否改变了长期以来背景较差的年轻人更有可能吸烟的趋势。我们将使用1994-2015年11-15岁青少年的年度调查数据来了解禁烟令对年轻人尝试吸烟、成为偶尔吸烟者或日常吸烟者或开始吸烟后戒烟的机会不平等的影响。我们将观察是否会有立即的影响，还是随着时间的推移而逐渐增加的影响。此外，众所周知，父母的吸烟行为可能对其十几岁的子女吸烟产生重要影响。目前尚不清楚禁烟令将如何影响父母的吸烟行为。禁止在公共场所吸烟可能意味着年轻人的父母在家里吸烟更多，以弥补他们在其他地方吸烟的限制。另外，它可能会导致在年轻人周围吸烟被认为是不可接受的，父母可能会在家里和孩子在一起时少吸烟。任何一种影响都会对青少年吸烟的吸收产生重要影响，而影响可能因家庭的不利程度而异。因此，我们将调查禁烟令对年轻人父母的吸烟行为有什么影响，以及这对青少年吸烟的影响有多大。禁烟令并不是英国发生的唯一可能影响青少年吸烟的重要变化。我们将利用这些事件发生时间的差异来区分禁烟令和其他变化的影响，比如将购买香烟的法定年龄从16岁提高到18岁，以及英国电子烟的可获得性和使用程度的提高。

Although the ban on smoking in public places has improved health by reducing exposure to second-hand smoke, it is not yet clear whether this has had any impact on youth smoking uptake. Particularly, we do not know whether this has changed the long-standing trend for youths from more disadvantaged backgrounds to be more likely to take up smoking. We will use annual survey data on 11-15 year olds from 1994-2015 to understand the impacts of the smoking ban on inequalities in the chances of young people trying smoking, becoming occasional or daily smokers, or quitting after starting smoking. We will look to see if there is an immediate impact, or a more gradual impact that increases over time. In addition, it is well known that the smoking behaviour of parents can be an important influence on smoking uptake among their teenage children. It is unclear how a smoking ban will affect the smoking behaviour of parents. A ban on smoking in public places may mean that parents of young people smoke more at home to compensate for restrictions on their smoking elsewhere. Alternatively, it may lead to it being viewed as less acceptable to smoke around young people, and parents may smoke less at home around their children. Either effect would be an important influence on youth smoking uptake, and effects could vary depending on how disadvantaged the home is. We will therefore investigate what effects the smoking ban has had on the smoking behaviour of young people's parents, and how much of any impact on youth smoking uptake is explained by this.The smoking ban is not the only important change happening in the UK that might impact on youth smoking uptake. We will use differences in the timing of these events to differentiate between the impacts of the smoking ban and other changes such as the raising of the legal age for purchasing cigarettes from 16 to 18 years, and the increasing availability and use of e-cigarettes within the UK.