title: [Incidence of wheezing and chronic cough in children aged 3-14 years in rural and urban areas of Zhongshan, China: a questionnaire survey].
abstract: OBJECTIVE
  To investigate the incidence of wheezing and chronic cough in children aged 3-14 years in different living areas of Zhongshan, China.
  
  
  METHODS
  According to the unified program of the 2010 national epidemiological survey of asthmatic children aged 0-14 years, a questionnaire survey of the children aged 3-14 years in rural and urban areas of Zhongshan was conducted.
  
  
  RESULTS
  A total of 15 763 children were included in the survey. Among all participants, 8 248 were from the urban area, and 7 515 from the rual area; 8 306 were boys, and 7 457 were girls. The percentage of children with a history of wheezing was significantly higher in the urban group than in the rural group (6.6% vs 3.2%; P<0.05), and it was significantly higher in boys than in girls for each group (P<0.05). The urban group had a significantly higher percentage of individuals who had wheezing in the past one year than the rural group (2.8% vs 1.5%; P<0.05), and this percentage was significantly higher in boys than in girls for each group (P<0.05). Compared with the rural group, the urban group had a significantly higher percentage of individuals who had chronic cough (duration 1 year) (7.9% vs 3.1%; P<0.05). The above indices were relatively high in children under 6 years of age, and all but the percentage of girls who had wheezing in the past one year in both rural and urban areas showed significant differences between all age groups.
  
  
  CONCLUSIONS
  The incidence of wheezing and chronic cough varies with age, sex, and living area for children aged 3-14 years in Zhongshan, and it is relatively high under 6 years of age, in the urban area, and among boys.
authors.affiliation: Pediatric Asthma and Immunotherapy Center, Zhongshan Bo'ai Hospital, Zhongshan, Guangdong 528403, China. zhshhdm@126.com.
authors.forename: Dong-Ming
authors.initials: DM
authors.lastname: Huang
authors.forename: Xiao-Xiong
authors.initials: XX
authors.lastname: Xiao
authors.forename: Si-Mao
authors.initials: SM
authors.lastname: Fu
authors.forename: Cui-Mei
authors.initials: CM
authors.lastname: Luo
authors.forename: Ke-Ming
authors.initials: KM
authors.lastname: Wang
authors.forename: Ye-Hong
authors.initials: YH
authors.lastname: Wang
authors.forename: Yuan-Hui
authors.initials: YH
authors.lastname: Feng
authors.forename: Jian
authors.initials: J
authors.lastname: Ruan
authors.forename: Bo-Qiang
authors.initials: BQ
authors.lastname: Zheng
authors.forename: Juan
authors.initials: J
authors.lastname: Huang
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Bi-Yun
authors.initials: BY
authors.lastname: Cui
authors.forename: Lan
authors.initials: L
authors.lastname: Li
authors.forename: Gui-Zhen
authors.initials: GZ
authors.lastname: Huang
authors.forename: Xiao-Ling
authors.initials: XL
authors.lastname: Guo
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D002908:Chronic Disease; D003371:Cough / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D012135:Respiratory Sounds; D011795:Surveys and Questionnaires