Brown Eric C, Graham John W, Hawkins J David, Arthur Michael W, Baldwin Megan M, Oesterle Sabrina, Briney John S, Catalano Richard F, Abbott Robert D
University of Washington, Seattle, WA, USA.
Eval Rev. 2009 Aug;33(4):311-34. doi: 10.1177/0193841X09337356. Epub 2009 Jun 9.
Communities That Care (CTC) is a prevention system designed to reduce adolescent substance use and delinquency through the selection of effective preventive interventions tailored to a community's specific profile of risk and protection. A community-randomized trial of CTC, the Community Youth Development Study, is currently being conducted in 24 communities across the United States. This article describes the rationale, multilevel analyses, and baseline comparability for the study's longitudinal cohort design. The cohort sample consists of 4,407 fifth- and sixth-grade students recruited in 2004 and 2005 and surveyed annually through ninth grade. Results of mixed-model ANOVAs indicated that students in CTC and control communities exhibited no significant differences (ps > .05) in baseline levels of student outcomes.
关爱社区（CTC）是一个预防系统，旨在通过选择针对社区特定风险和保护状况的有效预防干预措施，减少青少年药物使用和犯罪行为。一项关于 CTC 的社区随机试验——社区青年发展研究，目前正在美国 24 个社区进行。本文描述了该研究纵向队列设计的基本原理、多层次分析和基线可比性。队列样本包括 2004 年和 2005 年招募的 4407 名五、六年级学生，并每年对他们进行调查，直至九年级。混合模型方差分析的结果表明，CTC 社区和对照社区的学生在学生成果的基线水平上没有显著差异（p 值>.05）。
