PROJECT SUMMARY The mission of the Biostatistics Core is to provide comprehensive statistical support and targeted statistical training to investigators in the Center for Childhood Obesity Prevention (CCOP). This dedicated Biostatistics Core plays a vital role in supporting the CCOP by providing high quality expertise from biostatisticians focused on the Center’s research and training missions related to prevention of childhood obesity. In Phase 2, the Biostatistics Core will continue to support Center investigators on their research projects and in their development as independent investigators through the following aims: 1. Develop statistical collaborations with all Center research project and pilot project leaders, spanning the entire timeline from study inception to completion. 2. Provide statistical mentoring, education, and training. 3. Aid investigators in identifying, accessing and using relevant external and institutional data resources for addressing the problem of childhood obesity. This centralized resource for statistical collaboration, matched to the needs of Center projects, will improve the efficiency and methodological rigor of COBRE research projects and activities. The targeted mentoring, educational, and training activities will increase the statistical and research acumen of Center investigators, enhancing their preparation for independent research careers. Together with the Center’s other research cores, the Biostatistics Core contributes to the development of a solid infrastructure for an ongoing team-based research program in childhood obesity.