Written action plans compared to medical management alone.
D000328:Adult; D001249:Asthma / Q000503:physiopathology / Q000628:therapy*; D002648:Child; D002675:Child, Preschool; D019468:Disease Management; D006801:Humans; D010043:Outcome and Process Assessment, Health Care; D010347:Patient Care Planning; D010366:Peak Expiratory Flow Rate