title: [Nested case-control study on the influence factors of perinatal stage transmission of hepatitis B virus].
abstract: OBJECTIVE
  To determine the influence factors of perinatal stage transmission of hepatitis B virus (HBV) and to provide scientific evidence for the prevention of perinatal stag transmission of HBV.
  
  
  METHODS
  A 1:1 matched nested case-control study was conducted, and 141 pair of pregnant women with HBsAg-positive and their newborns were enrolled. A questionnaire was performed and blood-related indicators were detected. The data were dealt with single factor analysis and conditional logistic regression analysis using SPSS 13.0 and SAS 8.1.
  
  
  RESULTS
  Single factor paired Chi-square test showed that education, first class family history, disfunction of liver, serum glutamic-pyruvic transaminase, systematic treatment, intrahepatic cholestasis of pregnancy (ICP), fetal distress, and vaccinating hepatitis B immune globulin (HBIG) were the risk factors of perinatal stage transmission of HBV. Conditional logistic regression analysis indicated that first class family history, vaccinating HBIG, systematic treatment, and ICP were the risk factors of perinatal stage transmission of HBV.
  
  
  CONCLUSIONS
  For women with HB-sAg-positive, active treatment, the standard vaccination of HBIG, and preventing and controlling the incidence of ICP may reduce the incidence of perinatal stage transmission of HBV.
authors.affiliation: Department of Epidermiology, School of Public Health, Central South University, Changsha 410078,China.
authors.forename: Zhi-yu
authors.initials: ZY
authors.lastname: Liu
authors.forename: Xia-yu
authors.initials: XY
authors.lastname: Li
authors.forename: Xue-mei
authors.initials: XM
authors.lastname: Yan
authors.forename: Li-zhang
authors.initials: LZ
authors.lastname: Chen
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006509:Hepatitis B / Q000097:blood / Q000635:transmission*; D006514:Hepatitis B Surface Antigens / Q000097:blood; D006515:Hepatitis B virus / Q000276:immunology*; D006801:Humans; D007136:Immunoglobulins / Q000627:therapeutic use*; D007231:Infant, Newborn; D018445:Infectious Disease Transmission, Vertical / Q000517:prevention & control*; D016015:Logistic Models; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000188:drug therapy* / Q000821:virology
chemical_list: D006514:Hepatitis B Surface Antigens; D007136:Immunoglobulins