title: Danish registers on aspects of reproduction.
abstract: BACKGROUND
  The establishing of three Danish population-based registers, namely the Fertility Database, the Register of Legally Induced Abortions, and the In Vitro Fertilisation register, aimed at providing data for surveying of reproductive outcome.
  
  
  BACKGROUND
  The registers include information on births, abortions, and assisted reproduction as well as selected characteristics of the women (and men) involved.
  
  
  RESULTS
  Both the validity and coverage of each register are considered of high quality.
  
  
  CONCLUSIONS
  These registers provide, both individually and in combination, unique opportunities for undertaking detailed and comprehensive research in the field of reproduction.
authors.affiliation: Department of Sociology, Social Work and Organisation, Aalborg University, Aalborg, Denmark. lenetb@socsci.aau.dk
authors.forename: Lene Tølbøll
authors.initials: LT
authors.lastname: Blenstrup
authors.forename: Lisbeth B
authors.initials: LB
authors.lastname: Knudsen
mesh_terms: D000029:Abortion, Legal / Q000706:statistics & numerical data; D000293:Adolescent; D000328:Adult; D001723:Birth Rate; D016208:Databases, Factual; D003718:Denmark; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007246:Infertility / Q000628:therapy; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D012042:Registries / Q000592:standards; D012098:Reproduction; D027724:Reproductive Techniques, Assisted