Status of asthma control in children and the effect of parents' knowledge, attitude, and practice (KAP) in China: a multicenter study.

Background: Asthma is the most common chronic respiratory disease seriously endangering the health of children. But disease awareness and self-management skills are relatively poor in children; parents play an important role in the control of childhood asthma.

Objective: To investigate the status of asthma control and severity of asthma in children and to identify impact factors.