title: Women's attitudes towards mechanisms of action of birth control methods: a cross-sectional study in five European countries.
abstract: OBJECTIVE
  To assess women's attitudes towards the mechanisms of action of birth control methods.
  
  
  BACKGROUND
  When addressing women's knowledge of and attitudes towards birth control methods, researchers frequently focus on side effects, effectiveness or correct use. Women's opinions about mechanisms of action have been much less investigated, and research is usually concentrated on the EC pill.
  
  
  METHODS
  Cross-sectional study.
  
  
  METHODS
  Women, aged 18-49, from Germany, France, the UK, Sweden and Romania were randomly selected (n = 1137). They were asked whether they would use a method that may work after fertilisation or after implantation and whether they would continue using it after learning it may have such effects. Logistic regression was performed to evaluate the influence of certain characteristics on women's attitudes.
  
  
  RESULTS
  Almost half of women in Romania and Germany would not use methods with postfertilisation effects, while the lowest percentages were found in Sweden and in France. Regarding methods with postimplantation effects, higher percentages were found in all the countries. Highly educated women and those using a highly effective method were more likely to use methods with postfertilisation effects. On the contrary, married women, those who stated that human life begins at fertilisation and women with middle/high religiosity were less likely to consider using methods that may act after fertilisation.
  
  
  CONCLUSIONS
  One-third of European women reported that they would not consider using a method that may have postfertilisation effects.
  
  
  CONCLUSIONS
  Given that postfertilisation effects may not be acceptable to some women, informing them of which methods may have these effects is essential to obtaining complete informed consent and to promoting women's autonomy.
authors: Department of Preventive Medicine and Public Health, School of Medicine, University of Navarra, Pamplona, Spain; Institute for Culture and Society, University of Navarra, Pamplona, Spain.
authors: Cristina
authors: C
authors: Lopez-del Burgo
authors: Rafael T
authors: RT
authors: Mikolajczyk
authors: Alfonso
authors: A
authors: Osorio
authors: Tania
authors: T
authors: Errasti
authors: Jokin
authors: J
authors: de Irala
mesh_terms: D000293:Adolescent; D000328:Adult; D001294:Attitude to Health; D003267:Contraception / Q000379:methods*; D003430:Cross-Sectional Studies; D005060:Europe; D005260:Female; D006801:Humans; D008875:Middle Aged
keywords: emergency contraceptive pill; family planning; informed consent; intrauterine device; mechanism of action; oral contraceptives; postfertilisation effects