Variation in clinical practice patterns has attracted the attention of specialty organizations, payers, government health agencies, and the public. Such variation raises concerns about efficacy and cost relative to the care provided. Consequently, the establishment of national benchmarks has become an increasing priority in trauma care as well as elsewhere in the health sector. Comparing treatment of pediatric injury by hospital type or physician expertise has often created more controversy than conformity. Three key components that help define quality of care include infrastructure, process, and outcome. This report will highlight outcomes studies in pediatric trauma care, often comparing outcomes by physician and hospital expertise. We will discuss pediatric trauma mortality and outcomes in abdominal, closed head, and orthopedic injuries with an emphasis on functional outcomes. Much of the data are derived from large regional and national databases, which are increasingly available and useful in the analysis of specific aspects of our health care delivery system.