title: Demographic, medical and treatment characteristics associated with couples' decisions to donate fresh spare embryos for research.
abstract: BACKGROUND
  Isolation of human embryonic stem cell lines has opened a promising and pioneering area of basic and applied medical research. The issues in relation to a couples' decision in donating their supernumerary embryos for research need to be investigated further.
  
  
  METHODS
  We carried out a prospective study of 300 couples who underwent IVF/ICSI treatment cycles in our unit. We analysed various factors contributing to their decision to consent to donate spare embryos for stem cell or preimplantation genetic diagnosis research.
  
  
  RESULTS
  The majority of couples (54%) consented to donate their surplus embryos for research. Couples of ethnic minority origin were less willing to consent for research compared to Caucasian couples. The number of ovarian follicles at pre-hCG scan and the number of embryos obtained were significantly higher in couples consenting for research. The funding source of treatment did not appear to influence the decision to donate. Couples with previous failed fertilization were less likely to consent to embryo research.
  
  
  CONCLUSIONS
  Physical characteristics based on ovarian response during a treatment cycle may positively influence a couple's decision to donate embryos. Further studies are needed to identify those couples who are likely to agree to research so that counselling for research can be directed efficiently.
authors.affiliation: Newcastle Fertility Centre at Life, Bioscience Centre, International Centre for Life, Newcastle upon Tyne, NE1 4EP, UK. meenakshi.choudhary@newcastle.ac.uk
authors.forename: M
authors.initials: M
authors.lastname: Choudhary
authors.forename: E
authors.initials: E
authors.lastname: Haimes
authors.forename: M
authors.initials: M
authors.lastname: Herbert
authors.forename: M
authors.initials: M
authors.lastname: Stojkovic
authors.forename: A P
authors.initials: AP
authors.lastname: Murdoch
mesh_terms: D000328:Adult; D001213:Asian / Q000523:psychology / Q000706:statistics & numerical data; D035843:Biomedical Research; D003657:Decision Making; D019924:Embryo Disposition / Q000523:psychology*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007247:Infertility, Female / Q000503:physiopathology / Q000523:psychology / Q000628:therapy; D008297:Male; D010053:Ovary / Q000503:physiopathology; D019836:Preimplantation Diagnosis; D011446:Prospective Studies; D020554:Sperm Injections, Intracytoplasmic; D013234:Stem Cells; D009927:Tissue and Organ Procurement / Q000706:statistics & numerical data; D044465:White People / Q000523:psychology / Q000706:statistics & numerical data