Northwestern Juvenile Project (Cook County, Illinois), Follow-up 6, 2004-2008

This study contains data from the sixth follow-up interview of the Northwestern Juvenile Project (NJP), a longitudinal assessment of alcohol, drug, or mental service treatment needs of juvenile detainees. The sixth follow-up occurred approximately 8 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, and 296 non-Hispanic white respondents. Participants were tracked from the time they left detention. All participants were eligible for the sixth follow-up interview. 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.

本研究收录了西北青少年项目（NJP）第六次随访调查的数据，该调查是一项对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。第六次随访在基线访谈后约8年进行，主要研究精神疾病的发病、持续存在及其相关预测变量、药物使用模式及其他风险行为的演变。项目目标包括：（1）研究酒精、药物和心理疾病的发病、持续存在；（2）研究风险行为的途径和模式。研究分析了疾病随时间的变化（包括发病、缓解和复发）、合并症、相关的功能障碍，以及与这些疾病和功能障碍相关的风险和保护因素。本研究探讨了药物使用及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，这些风险行为的先兆（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，自1995年至1998年进入库克县青少年临时羁押中心参与研究。样本中包括1005名非裔美国人、524名西班牙裔和296名非西班牙裔白人受访者。参与者自离开羁押中心后一直被追踪。所有参与者均有资格参加第六次随访访谈。无论受访者在其随访访谈应答时身处何地（社区、矫正设施或电话访谈，若其居住地距离芝加哥超过两小时），均进行了重新访谈。