In light of these facts, it becomes urgent to implement recommended standards for health care transition and evaluate their impact on transition outcomes. This research quantifies the impact of recommended health care transition practices using a randomized trial design and analysis following the intention-to-treat paradigm. The investigators do so by comparing aspects of 1) health care transition effectiveness (i.e., care coordination, timing, and services received); 2) experience of care (i.e., satisfaction and quality of chronic illness care); and 3) health care utilization in a population of 18-22 year-old African-American adolescents with special health care needs, receiving primary care in an urban academic adolescent medicine practice, using standardized outcome measures. Half of participants received usual care enhanced by written transition information, and half received a health care transition intervention modeled on the joint American Academy of Pediatrics, the American Academy of Family Physicians, and the American College of Physicians best practices report, released July 2011 that identified six recommended core components for transition programs. These include both practice based components (i.e. written transition policy, transitioning youth registry, and transfer of care) and patient level components (i.e. transition planning and completion). This report makes available an important standard for establishing transition practices but also demands careful evaluation.