OBJECTIVES. Project Northland is an efficacy trial with the goal of preventing or reducing alcohol use among young adolescents by using a multilevel, communitywide approach. METHODS. Conducted in 24 school districts and adjacent communities in northeastern Minnesota since 1991, the intervention targets the class of 1998 (sixth-grade students in 1991) and has been implemented for 3 school years (1991 to 1994). The intervention consists of social-behavioral curricula in schools, peer leadership, parental involvement/education, and communitywide task force activities. Annual surveys of the class of 1998 measure alcohol use, tobacco use, and psychosocial factors. RESULTS. At the end of 3 years, students in the intervention school districts report less onset and prevalence of alcohol use than students in the reference districts. The differences were particularly notable among those who were nonusers at baseline. CONCLUSIONS. The results of Project Northland suggest that multilevel, targeted prevention programs for young adolescents are effective in reducing alcohol use.

Project Northland was a randomized trial to reduce alcohol use among adolescents in 24 school districts in northeastern Minnesota. Phase 1 (1991-1994), when the targeted cohort was in grades 6-8, included school curricula, parent involvement, peer leadership and community task forces. The Interim Phase (1994-1996) involved minimal intervention. Phase 2 (1996-1998), when the cohort was in grades 11 and 12, included a classroom curriculum, parent education, print media, youth development and community organizing. Outcomes of these interventions were assessed by annual student surveys from 1991 to 1998, alcohol purchase attempts by young-looking buyers in 1991, 1994 and 1998, and parent telephone surveys in 1996 and 1998. Growth curve analysis was used to examine the student survey data over time. Project Northland was most successful when the students were young adolescents. The lack of intervention in the Interim Phase when the students were in grades 9 and 10 had a significant and negative impact on alcohol use. The intervention used with the high school students as those in grades 11 and 12 made a positive impact on their tendency to use alcohol use, binge drinking and ability to obtain alcohol. There was no impact in Phase 2 on other student-level behavioral and psychosocial factors. Developmentally appropriate, multi-component, community-wide programs throughout adolescence appear to be needed to reduce alcohol use.

Aims-The goal of this group-randomized trial was to test the effectiveness of an adapted alcohol use preventive intervention for urban, low-income and multi-ethnic settings.Design and Setting-Sixty-one public schools in Chicago were recruited to participate, were grouped into neighborhood study units, and randomly assigned to intervention or "delayed program" control condition.Participants-The study sample (n=5812 students) was primarily African American, Hispanic and low-income.Intervention-Students, beginning in sixth grade (age 12), received three years of intervention strategies (curricula, family interventions, youth-led community service projects, community organizing).Measurements-Students participated in yearly classroom-based surveys to measure their alcohol use and related risk and protective factors. Additional evaluation components included a parent survey, a community leader survey, and alcohol purchase attempts. NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author ManuscriptFindings-Overall the intervention, compared with a control condition receiving "prevention as usual," was not effective in reducing alcohol use, drug use or any hypothesized mediating variables (i.e., related risk and protective factors). There was a nonsignificant trend (p = .066) that suggested the ability to purchase alcohol by young appearing buyers was reduced in the intervention communities compared to the control communities, but this could be due to chance. Secondary outcome analyses to assess the effects of each intervention component indicated that the home-based programs were associated with reduced alcohol, marijuana, and tobacco use combined (p = .01), with alcohol use alone approaching statistical significance (p = .06).Conclusions-Study results indicate the importance of conducting evaluations of previously validated programs in contexts that differ from the original study sample. Also, the findings highlight the need for further research with urban, low-income adolescents from different ethnic backgrounds to identify effective methods to prevent and reduce alcohol use.

Locational data, logged on portable GPS units and matched with accelerometer data, was used to examine associations of the built environment with physical activity and sedentary behaviors of adolescent females. In a sample of 293 adolescent females ages 15 to 18 years old in Minneapolis and San Diego, the built environment around each GPS point and its corresponding sedentary, light, and moderate-to-vigorous intensity physical activity were examined using random intercept multinomial logistic regression models. The odds of higher physical activity intensity (3-level outcome: sedentary, light, MVPA) were higher in places with parks, schools, and high population density, during weekdays, and lower in places with more roads and food outlets. Understanding the places where physical activity and sedentary behaviors occur appears to be a promising strategy to clarify relationships and inform policy aimed at increasing physical activity and reducing sedentary behaviors.

D.A.R.E. Plus significantly enhanced the effectiveness of the D.A.R.E. curriculum among boys and was more effective than the delayed program controls, underscoring the potential for multiyear, multicomponent prevention programs and demonstrating sex differences in response to intervention programs.

Abstractalcohol at baseline, self-efficacy to refuse offers of alcohol was a significant mediator.

Obesity prevention in children offers a unique window of opportunity to establish healthful eating and physical activity behaviors to maintain a healthful body weight and avoid the adverse proximal and distal long-term health consequences of obesity. Given that obesity is the result of a complex interaction between biological, behavioral, family-based, and community environmental factors, intervention at multiple levels and across multiple settings is critical for both short- and long-term effectiveness. The Minnesota NET-Works (Now Everybody Together for Amazing and Healthful Kids) study is one of four obesity prevention and/or treatment trials that are part of the Childhood Obesity Prevention and Treatment (COPTR) Consortium. The goal of the NET-Works study is to evaluate an intervention that integrates home, community, primary care and neighborhood strategies to promote healthful eating, activity patterns, and body weight among low income, racially/ethnically diverse preschool-age children. Critical to the success of this intervention is the creation of linkages among the settings to support parents in making home environment and parenting behavior changes to foster healthful child growth. Five hundred racially/ethnically diverse, two–four year old children and their parent or primary caregiver will be randomized to the multi-component intervention or to a usual care comparison group for a three-year period. This paper describes the study design, measurement and intervention protocols, and statistical analysis plan for the NET-Works trial.

Community ownership and maintenance of heart health programs was a major study goal of the Minnesota Heart Health Program (MHHP), a community-based National Heart, Blood and Lung Institute (NIH)-funded demonstration project. A partnership between the University of Minnesota and three Upper Midwest intervention communities was initiated in 1981. Local citizen boards were instrumental in planning, implementing and incorporating programs. Through an 8 year process of community organization, training and volunteer involvement, MHHP educational program responsibility was transferred to existing community-based groups and organizations. In 1989, when federal funding was withdrawn, 70% of all heart health intervention programs initiated by MHHP were being continued by local sponsors and supported by local funds. By 1992, maintenance of programs had decreased to an average 60%. Differential results of program incorporation among the three intervention communities are presented including findings on community sectors that most frequently sponsored programs. Factors that facilitate or impede local ownership are discussed. Research on longer-term maintenance of heart health programs in the three communities continues.