To examine the effectiveness of hospitalbased comprehensive care programs in improving the quality of care for children with special health care needs. Data Sources: A systematic review was conducted using Ovid MEDLINE, CINAHL, EMBASE, PsycINFO, Sociological Abstracts SocioFile, and Web of Science.Study Selection: Evaluations of comprehensive care programs for categorical (those with single disease) and noncategorical groups of children with special health care needs were included. Selected articles were reviewed independently by 2 raters.Data Extraction: Models of care focused on comprehensive care based at least partially in a hospital setting. The main outcome measures were the proportions of studies demonstrating improvement in the Institute of Medicine's quality-of-care domains (effectiveness of care, efficiency of care, patient or family centeredness, patient safety, timeliness of care, and equity of care).Data Synthesis: Thirty-three unique programs were included, 13 (39%) of which were randomized controlled