One hundred sixty (160) Hispanic children with asthma, aged 6-15 years who were cared for in a pediatric residents' continuity clinic were enrolled for study. A research associate interviewed parents and children separately using standardized questionnaires to obtain information about 1) health beliefs, 2) reported health behavior, 3) knowledge and attitudes about asthma, 4) functional morbidity, 5) acculturation, and 6) socio-demographic factors. A research nurse performed spirometry on each subject. Additional information was obtained by review of medical records and school attendance records. Patients were then randomized into treatment and control groups. Treatment group patients and their families participated in the patient education intervention. The intervention consisted of a series of four videotapes and written materials which focused on major aspects of self-management for children with asthma. Patients and families received the four modules at one month intervals. Selected modules were reviewed with the research nurse at appointed visits approximately six, 9, and 12 months following enrollment. Follow-up data were obtained by interview, medical record review, and spirometry at six, 12, 18, and 24 months following enrollment.