Risk factors for recurrent respiratory infections in preschool children in china.

Objective: To identify and compare risk factors for recurrent respiratory infections in preschool children between resident and floating population in Yiwu, China.

Methods: Investigations was conducted in resident and floating population in Yiwu city, Zhejiang province. A structured questionnaire was used to collect information on influence factors.

Comparison of risk factors for recurrent respiratory infections between urban and rural preschool children in Yiwu, China.

Background: Many studies have shown an association between the risk of increased recurrent respiratory infections and socioeconomic and fostering factors, but often only a few risk factors have been studied. This study aimed to identify and compare such factors between urban and rural preschool children.

Methods: Case control studies were conducted in Yiwu urban and rural areas respectively in Zhejiang Province.