[Third nationwide survey of childhood asthma in urban areas of China].

The total asthma incidence of childhood asthma aged 0-14 year old in cities in China was 3.02% and prevalence in last two years was 2.32%. The asthma prevalence was significantly different among regions, cities, ages, and genders. Nearly one third of patients with asthma was not diagnosed in early stage or diagnosed correctly. The treatment and management of asthma in children awaits improvement as well.