Examining the Relations of Cigarette and Alcohol Use Across Emerging Adulthood

描述（由申请人提供）：物质使用的高峰期在成年期，年龄段从青少年后期到20年代初。虽然横断面研究已经确定吸烟和饮酒高度相关，但人们对吸烟和饮酒在这一发展阶段之间的纵向关系知之甚少。成年初显期的特征是个体差异，包括许多可能与物质使用相关的生活过渡，包括从大学毕业到个人21岁生日的过渡，此时饮酒不再是非法活动，但使用以变量为中心的方法的分析，如传统回归，依赖于这样的假设，即吸烟和饮酒的纵向共同发生对于所有参与者都是相同的，从而忽略了这种个体异质性。本研究的目的是更好地了解整个成年期吸烟和饮酒的个体共同发生模式。分析将使用来自UT Experience的现有数据进行！这项研究是对2004年夏季大学入学前招募的2，247名高中毕业生进行的队列研究，对他们进行了6年的跟踪调查（10波数据收集）。在第1波，样本为60%女性，55%确定为高加索人，18%为亚洲人，16%为西班牙裔，4%为非洲裔美国人，7%确定为其他种族/族裔群体。数据是通过一个安全的网站在线收集的。这项研究将使用两种以人为中心的方法，增长混合模型和潜在转换分析，以1）测试吸烟和饮酒的纵向共同发生 2）确定生活转变如何影响吸烟和饮酒在整个成年期的共同发生。 公共卫生相关性：在成年初期吸烟和饮酒（例如，18-25岁）与严重后果有关。考虑到整个成年期的物质使用的异质性，重要的是要了解共同发生的使用的个人模式，具有最高的未来后果的潜力，以及是否有在成年期内这些共同发生模式转变的阶段。然后，就有可能在最有可能影响他们未来药物使用行为的时间段针对那些风险最高的个人进行干预。

DESCRIPTION (provided by applicant): Substance use peaks during emerging adulthood, the age period from the late teens to the early 20s. And while cross-sectional studies have established that cigarette smoking and alcohol use are highly correlated, very little is known about the longitudinal relations between cigarette smoking and alcohol use during this stage of development. Emerging adulthood is characterized by individual variability and includes a number of life transitions potentially relevant to substance use, including the transitions into an out of college and an individual's 21st birthday, when alcohol use is no longer an illegal activity But analyses that use variable- centered approaches, such as traditional regression, rely on the assumption that the longitudinal co- occurrence of cigarette smoking and alcohol use are the same for all participants, thus ignoring this individual heterogeneity. The purpose of this research is to develop a better understanding of the individual co-occurring patterns of cigarette smoking and alcohol use throughout emerging adulthood. The analyses will be conducted using existing data from the UT Experience! study, a cohort study of 2,247 high school graduates recruited during the summer of 2004, prior to college matriculations, who were followed for 6 years (10 waves of data collection). At Wave 1, the sample was 60% female, 55% identified as Caucasian, 18% Asian, 16% Hispanic, 4% African American, and 7% identified as another racial/ethnic group. Data were collected online through a secured website. The proposed study will use two person-centered methodological approaches, growth mixture modeling and latent transition analysis, to 1) test the longitudinal co-occurrence of cigarette smoking and alcohol use throughout emerging adulthood, and 2) determine how life transitions impact the co- occurrence of cigarette smoking and alcohol use throughout emerging adulthood. PUBLIC HEALTH RELEVANCE: The use of cigarettes and alcohol in emerging adulthood (e.g., ages 18-25) is associated with significant consequences. Given the heterogeneity of substance use throughout emerging adulthood, it is important to understand the individual patterns of co-occurring use that have the highest potential for future consequences and whether there are stages within emerging adulthood where these co-occurrence patterns shift. It would then be possible to target interventions to those individuals at highest risk at the time periods that are most likely to influence their future substance using behaviors.