Background Previous studies have shown the increasing prevalence of childhood asthma
around the world as well as in China. Nevertheless, little is known about the epidemiology of …

Background Asthma has been a global problem, especially in children. We aim to evaluate
the contemporary prevalence and influencing factors of asthma among children aged 3–7 …

Background It is well known that the prevalence of asthma has been reported to increase in
many places around the world during the last decades. Therefore, the aim of this study was …

Background The prevalence of asthma among Shanghai children has increased over time.
This increase might be associated with changes in environmental exposures. Investigation …

Objective: The prevalence of asthma in children age 0–14 years in Fuzhou, a city in
Southeast China, was 1.57% in 1990 and 3.28% in 2000. The aim of this study was to …

Background Asthma is a global problem. Prevalence varies among different countries and
cities. We aimed to obtain the prevalence, describe the characteristics, and discover factors …

Background: After the promotion of the two-child policy in recent years, the population of
children in mainland China was bound to have a rapid growth, which would bring great …

OBJECTIVE: To analyze the prevalence of asthma and asthma related symptoms among
children aged 0-14 years in three Chinese cities and to obtain a crude estimation of the …

Background In China, childhood asthma prevalence showed a remarkable increase in the
past decades. An updated epidemiological assessment of childhood asthma in China with a …

Objective: To assess the prevalence of asthma and other allergies in children in Urumqi and
Beijing, compared with that in Hong Kong. Methods: A total of 7754 primary school students …