Northwestern Juvenile Project, (Cook County, Illinois): Follow-up 1, 1998-2001

This study contains data from the first follow-up interview of the Northwestern Juvenile Project (NJP), a longitudinal assessment of alcohol, drug, or mental service treatment needs of juvenile detainees. This initial follow-up occurred approximately three years after the baseline interview and focused on studying the development and persistence of psychiatric disorders, related predictive variables, patterns of drug use, and other risk behaviors. The project's aims included studying (1) development and persistence of alcohol, drug, and mental disorders and (2) pathways and patterns of risky behaviors. Changes in disorders over time were studied (including onset, remission, and recurrence), comorbidity, associated functional impairments, and the risk and protective factors related to these disorders and impairments. This study addressed patterns and sequences of the development of drug use and related variables, focusing on gender differences, racial/ethnic differences, the antecedents of these risky behaviors (risk and protective factors), and how these behaviors were interrelated. The original sample included 1829 randomly selected youth, 1172 males and 657 females, then 10 to 18 years old, enrolled in the study as they entered the Cook County Juvenile Temporary Detention Center from 1995 to 1998. Among the sample were 1005 African Americans, 524 Hispanics, 296 non-Hispanic white respondents. Participants were tracked from the time they left detention. Re-interviews were conducted regardless of where respondents were living when their follow-up interview was due: in the community, correctional settings, or by telephone if they lived farther than two hours from Chicago.

本项研究收录了西北青少年项目（NJP）的首次后续访谈数据，该项目是一项关于青少年羁押人员酒精、药物或心理服务治疗需求的纵向评估。该首次后续访谈在大基线访谈后大约三年进行，旨在研究精神疾病的发病、持续发展及其相关预测变量、药物使用模式以及其他风险行为的特征。项目的研究目标包括：（1）酒精、药物和心理疾病的发病、持续发展；（2）风险行为的途径和模式。研究还探讨了疾病随时间的变化（包括发病、缓解和复发）、合并症、相关的功能损害以及与这些疾病和损害相关的风险和保护因素。本研究还关注了药物使用及其相关变量的发展模式和序列，重点关注性别差异、种族/民族差异、这些风险行为的先导因素（风险和保护因素），以及这些行为之间的相互关系。原始样本包括1829名随机选取的青少年，其中1172名男性，657名女性，年龄在10至18岁之间，他们在1995年至1998年期间进入库克县青少年临时拘留中心时被纳入研究。样本中包括1005名非洲裔美国人、524名西班牙裔和296名非西班牙裔白人受访者。参与者从他们离开拘留所的时间开始被追踪。无论受访者在其后续访谈到期时居住在哪里：社区、矫正设施或电话访谈，只要他们居住地点距离芝加哥超过两小时，都会进行重新访谈。