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。尽管在过去几十年中吸烟人数有所下降，但吸烟在美国成年人中仍然很常见（21%），并且是可预防的主要死亡原因。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年中停滞不前。这种停滞的原因尚不清楚。虽然烟草控制工作非常成功，但这些战略最终可能无法惠及所有吸烟者。因此，拟议的研究将检查在过去的二十年中，阻碍成功戒烟的特定因素在吸烟者中是否变得更加普遍。我们还将研究这些因素可能导致持续吸烟的潜在途径。这项研究的结果将有助于更好地了解剩余吸烟者戒烟的障碍，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.