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年吸烟产生了任何影响。特别是，我们不知道这是否改变了长期以来来自较弱势背景的青少年更有可能吸烟的趋势。我们将使用1994-2015年11-15岁青奥尔兹的年度调查数据，了解禁烟对青少年尝试吸烟、偶尔或每天吸烟或开始吸烟后戒烟的机会不平等的影响。我们将看看是否有立即的影响，或随着时间的推移逐渐增加的影响。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。目前还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，以弥补在其他地方吸烟的限制。或者，这可能导致人们认为在年轻人周围吸烟是不太可以接受的，父母可能会在家里在孩子周围吸烟。这两种影响都将对青少年吸烟产生重要影响，影响可能会因家庭的不利条件而异。因此，我们将调查禁烟令对青少年父母吸烟行为的影响，以及对青少年吸烟率的影响有多大。禁烟令并不是英国唯一可能影响青少年吸烟率的重要变化。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，例如将购买香烟的法律的年龄从16岁提高到18岁，以及英国电子烟的可用性和使用量增加。

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.