title: [Prevalence and risk factors of bronchial asthma among Li nationality in Hainan province].
abstract: OBJECTIVE
  To study the risk factors of bronchial asthma of Li nationality in Hainan.
  
  
  METHODS
  A total of 13 050 subjects of Li nationality were selected by random unequal ratio stratified cluster sampling method from southern, central and western part of Hainan and investigated with Hainan Epidemiological Asthma Survey Questionnaire of Li Nationality. There were 441 cases of bronchial asthma, and 1296 cases of control that were sampled by random number table method. The logistic regression method was used to analyze risk factors.
  
  
  RESULTS
  The asthma prevalence of Li nationality in Hainan was 3.38%(441/13 050). The main risk factors of asthma were family asthma (OR = 4.323, 95%CI = 3.259 - 5.735), hypersensitiveness (OR = 7.775, 95%CI = 5.686 - 10.632), smoking (OR = 1.494, 95%CI = 1.174 - 1.902), cooking fuels and living environment. Cold air change (OR = 1.604, 95%CI = 1.286 - 2.001) and respirable dust or irritant gas (OR = 2.123, 95%CI = 1.702 - 2.648) were the important incentives.
  
  
  CONCLUSIONS
  The main risk factors of asthma among Li nationality were family asthma, hypersensitiveness, smoking, cooking fuels by means of fuel oil, hay or wood, living environment by means of couch grass room and human-livestock mix live, cold air change, respirable dust or irritant gas.
authors.affiliation: Emergency Department of Hainan Provincial People's Hospital, Haikou 570102, China. ypding@263.net
authors.forename: Yi-peng
authors.initials: YP
authors.lastname: Ding
authors.forename: Hong-xia
authors.initials: HX
authors.lastname: Yao
authors.forename: Xiao-lan
authors.initials: XL
authors.lastname: Tang
authors.forename: Hai-wu
authors.initials: HW
authors.lastname: He
authors.forename: Hui-fang
authors.initials: HF
authors.lastname: Shi
authors.forename: Li
authors.initials: L
authors.lastname: Lin
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Shan
authors.initials: S
authors.lastname: Chen
authors.forename: Jing
authors.initials: J
authors.lastname: Chen
authors.forename: Hai-jiao
authors.initials: HJ
authors.lastname: Wang
mesh_terms: D000328:Adult; D044466:Asian People; D001249:Asthma / Q000453:epidemiology*; D002648:Child; D002681:China / Q000453:epidemiology; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D012307:Risk Factors