Measuring the quality of preventive and developmental services for young children: national estimates and patterns of clinicians' performance.

To generate a national picture of performance in the area of preventive and developmental services for children aged 4 to 35 months using 4 composite quality measures in the areas of 1) anticipatory guidance and parental education, 2) screening for family psychosocial risks, 3) screening for smoking and drug and alcohol use in the home, and 4) provision of family-centered care.Data from the National Survey on Early Childhood Health (N = 2068)...