title: [Burden of disease in schistosomiasis japonica III household socioeconomic determinants of chronic schistosomiasis].
abstract: OBJECTIVE
  To explore the socioeconomic determinants of chronic schistosomiasis japonica at household level.
  
  
  METHODS
  The socioeconomic status of case and control families in lake and marsh schistosomiasis endemic areas were investigated by questionnaire, socioeconomic factors were analyzed by the principle components analysis, and the wealth index were calculated to evaluate the economic status at household level. Then the relation between schistosome infection and some influencing factors were analyzed by two-level Logistic regression model.
  
  
  RESULTS
  A total of 2 716 households in 91 villages were investigated, among which 1 050 were case families and 1 666 were control families. The values of the first eigenvector of stone/brick house, house with > or = 2 floors, black/white TV, colour TV, washing machine, refrigerator, side occupation were -0.42, 0.46, -0.45, 0.46, 0.32, 0.24 and 0.16, respectively, which suggested that the first eigenvector was the comprehensive index reflecting family wealth. The results of Logistic regression model showed that there were 4 household factors significantly relating to chronic schistosomiasis, namely, the distance from residence to schistosome-infested water, source of washing water, economic status, and wet land area per capita, among which the factor that the distance from residence to schistosome - infested water < 100 m with the highest (OR = 12.590, P = 0).
  
  
  CONCLUSIONS
  In the lake and marsh endemic areas, health education and other intervention to the poor family living along river or lake without safe water supply should be strengthened to control schistosomiasis.
authors.affiliation: National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Centre for Malaria, Schistosomiasis and Filariasis, Shanghai 200025, China.
authors.forename: Tie-Wu
authors.initials: TW
authors.lastname: Jia
authors.forename: Le-Ping
authors.initials: LP
authors.lastname: Sun
authors.forename: Qing-Biao
authors.initials: QB
authors.lastname: Hong
authors.forename: Yao
authors.initials: Y
authors.lastname: Deng
authors.forename: Gong-Hua
authors.initials: GH
authors.lastname: Zhang
authors.forename: Ping
authors.initials: P
authors.lastname: Yi
authors.forename: Jia-Gang
authors.initials: JG
authors.lastname: Guo
authors.forename: Xiao-Nong
authors.initials: XN
authors.lastname: Zhou
mesh_terms: D000328:Adult; D000368:Aged; D002681:China; D002908:Chronic Disease / Q000191:economics*; D017281:Cost of Illness; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011897:Random Allocation; D012554:Schistosomiasis japonica / Q000191:economics*; D012959:Socioeconomic Factors