title: [Association between contraceptive choice and the risk of induced abortion among floating married women of childbearing age].
abstract: OBJECTIVE
  To find the association between factors related to contraception, reproductive health and the risk of induced abortion among floating married women of childbearing age, so as to provide basis for improving the access to health services for floating women of childbearing age.
  
  
  METHODS
  Using data from the reproductive health survey on floating population from five cities in 2005, factors as demographic characteristics, contraceptive choice, settings and access to health services, induced abortion among the floating married women of childbearing age were described. Multivariate logistic regression was used to investigate the association the factors relative to contraception, reproductive health and the risk of induced abortion between 543 cases and 1796 controls.
  
  
  RESULTS
  The risks of induced abortion among those under 30-years-old floating married women of childbearing age were 2.08-fold (95%CI:1.26-3.42) of the group at the age of 40 years old. The risk of abortion among floating married women at childbearing age who were taking short-acting contraceptive methods, was 2.56-fold (95%CI:1.84-3.56) of those using the long-acting methods of contraception. The induced abortion risk of floating women at childbearing age who paid the contraceptive implement out of their own pockets, was 1.72-fold (95% CI:1.32-2.24) of those who got it free of charge. The risks of abortion among women who received the contraceptive devices through maternal and child health centers, general hospitals or street residential committees were 2.69-fold (95%CI:1.71-4.22), 2.49-fold (95%CI:1.68-3.68)and 1.81-fold (95%CI:1.20-2.72) of those who received them from urban or rural family planning stations, respectively. The induced abortion risk for women who were ignorant of emergency contraception, was 1.41-fold (95% CI: 1.12-1.78) of those who had the knowledge. The abortion risks of floating women at childbearing age who get the contraceptive knowledge from the colleagues, relatives or friends were 1.85 times (95% CI:1.28-2.67) of those from family planning workers.
  
  
  CONCLUSIONS
  Factors, including age, short-acting contraceptive methods, paid access to contraceptive implement, ignorance of emergency contraception might largely contribute to the increased risk of induced abortion among floating married women of childbearing age, which called for future attention.
authors.affiliation: Institute of Population Research WHO Collaborating Center on Reproductive Health and Population Science, Peking University,Beijing 100871, China.
authors.forename: Li-jun
authors.initials: LJ
authors.lastname: Pei
authors.forename: Lin
authors.initials: L
authors.lastname: Zhu
authors.forename: Chao
authors.initials: C
authors.lastname: Guo
authors.forename: Hong-yan
authors.initials: HY
authors.lastname: Liu
mesh_terms: D000028:Abortion, Induced / Q000706:statistics & numerical data*; D000328:Adult; D002681:China; D003268:Contraception Behavior; D005193:Family Planning Services; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D011247:Pregnancy; D014171:Transients and Migrants