Data Management/Statistics Core

项目总结(见说明)： 在这次更新中，数据管理、测量和统计(DMMS)核心将集中于四个主要目标：(1)提供跨项目的专家数据输入、管理和统计支持；(2)开发通用的、心理健康的测量方法(特别是吸烟行为和结果的测量)，以供跨项目使用；(3)实施跨项目的综合分析；以及(4)提出和开发与青少年吸烟数据分析相关的关键问题的统计方法。 (一)支撑。与原来的项目一样，我们将开发和维护一个用于数据输入和管理的计算机化数据库，我们将为该数据库编制详细的文件。我们将继续使用严格的数据录入、编辑和更新方法，确保数据干净、一致和安全。我们还将为所有项目提供技术支持和合作。 (2)措施。我们将对吸烟进行多层次、多尺度的评估。DMMS核心的一个具体目标是概念化和制定措施，这些措施将(A)有助于确定纵向吸烟模式，(B)有助于解释这些模式形成的背景。 (3)一体化。该方案项目的一个主要特点是，除了从其他三个项目中每个项目的队列子集收集的数据之外，还将通过项目1(四个年度评估)中管理的问卷从整个队列中获得数据。数字监测系统核心内的一个主要优先事项是开发技术模型，以便对来自多个来源的数据进行综合分析。 (4)发展。在数字监测系统核心内进行的方法学研究将寻求推动制定分析吸烟数据的统计方法。这些努力将集中在三个主要问题上：“依赖”的多个指数的概念化/组合，FIME中吸烟发展的个体异质性，以及异质性的影响特征。

PROJECT SUMMARY (See instructions): In this renewal, the Data Management, Measurement, and Stafistics (DMMS) Core will confinue to focus on four primary aims: (1) to provide expert data entry, management, and stafistical support across projects; (2) to develop common, psychometricahly sound measures (notably measures of smoking behaviors and outcomes) to use across projects; (3) to implement cross project, integrated analyses; and (4) to propose and develop stafisfical approaches to address key issues related to the analysis of adolescent smoking data. (1) SUPPORT. As in the original project, we will develop and maintain a computerized database for data entry and management, and we will develop detailed documentation ofthe database. We will continue to ufilize rigorous methods for data entry, edifing, and updafing to ensure that the data are clean, consistent, and secure. We will also provide stafistical support and collaboration for all projects. (2) MEASURES. We will assess smoking at mulfiple fimes and with mulfiple measures. A specific aim of the DMMS Core is to conceptualize and develop measures that will (a) aid in the identificafion of longitudinal smoking patterns and (b) aid in the interpretafion of contexts in which these patterns develop. (3) INTEGRATION. A key feature of the program project is that data will be available from the full cohort through questionnaires administered in Project 1 (four annual assessments) in addifion to data collected from subsets of the cohort in each of the other three projects. A major priority within the DMMS Core is to develop stafisfical models that allow integrated analyses of data from many sources. (4) DEVELOPMENT. Methodological research within the DMMS core will seek to advance the development of statisfical approaches for the analysis of smoking data. These efforts will be focused around three primary issues: the conceptualization/combinafion of mulfiple indices of "dependence," individual heterogeneity in smoking development across fime, and characterizing influences of heterogeneity.