1. Objectives
1. To investigate the national children(0-14 years old)asthma prevalence;
2. To compare the prevalence rate between that in 1990 and 2000;
3. To analyse the asthma manifestations including the ages, seasons, causes, trigger and hereditary factors and their impact on the asthma patients, families and society;
4. To identify the risk factors by questionnaires in case-control research.
2. Study Design / Clinical Plan
1. The screening stage: to distinguish suspected asthma from the children age from 0 to 14 years old.
2. To obtain identified asthma from the suspected asthma.
3. To evaluate the prevalence and severe degree of 0 to 14-year-old children asthma and gain the main risk factors by case-control research.
