Role of Depression and Anxiety in the Tobacco Epidemic

描述（由申请人提供）：美国大多数吸烟者都想戒烟。尽管过去几十年吸烟率有所下降，但吸烟在美国成年人中仍然很常见（21%），是导致死亡的主要可预防原因。烟草控制工作大大降低了吸烟率（从1964年的43%）。然而，大量证据表明，吸烟率的下降在过去10年里一直停滞不前。这种停滞的原因尚不清楚。虽然烟草控制工作非常成功，但最终这些战略可能无法惠及所有吸烟者。因此，这项拟议的研究将调查在过去二十年中，阻碍成功戒烟的特定因素是否在吸烟者中变得更加普遍。我们还将研究这些因素可能导致持续吸烟的潜在途径。这项研究的结果将使人们更好地了解吸烟者戒烟的障碍，并为如何降低美国吸烟率的辩论提供信息。

DESCRIPTION (provided by applicant): The majority of smokers in the U.S. would like to quit. Despite declines in cigarette use during the past several decades, smoking remains common (21%) among U.S. adults and is the leading preventable cause of death. Tobacco control efforts have greatly reduced smoking prevalence (from 43% in 1964). However, extensive evidence shows that the decline in smoking prevalence has stagnated for the past 10 years. The reasons for this stagnation are unknown. While tobacco control efforts have been very successful, ultimately, these strategies may not reach all smokers. Therefore, the proposed study will examine whether the prevalence of specific factors that impede successful quitting have become more common among smokers over the past two decades. We will also examine potential pathways through which these factors may lead to persistent smoking. The results of this study will lead to a better understanding of the barriers to cessation among remaining smokers, informing the debate over how to lower the prevalence of smoking in the US.