title: Two cycles with single embryo transfer versus one cycle with double embryo transfer: a randomized controlled trial.
abstract: BACKGROUND
  With the aim of reducing the number of multiple pregnancies after IVF we investigated the effectiveness of two cycles with single embryo transfer (SET) and one cycle with double embryo transfer (DET) after IVF and calculated the cost-effectiveness of both strategies.
  
  
  METHODS
  A randomized controlled trial was performed in 107 women, aged <35 years, in their first IVF cycle, with at least one good quality embryo. They were randomized to the SET (n = 54) or DET (n = 53) group using a computer-generated random block number table, stratified for primary or secondary infertility.
  
  
  RESULTS
  The cumulative live birth rates per woman randomized of two consecutive cycles of SET [41%; 95% confidence interval (CI) 27-54] versus one cycle of DET (36%; 95% CI 23-49) were comparable, whereas the multiple pregnancy rate was significantly higher: 37% (95% CI 15-59) in the DET and 0% in the in the SET group (P = 0.002). Combining the medical costs of the IVF treatments (where 1.5 more SET cycles were required to achieve each live birth) and of pregnancies up to 6 weeks after delivery, the total medical costs of DET per live birth were 13,680 and 13,438 for SET.
  
  
  CONCLUSIONS
  Two cycles with SET were equally effective as one cycle with DET, and the medical costs per live birth up to 6 weeks after delivery were the same. However, if lifetime costs for severe handicaps are included, more than 7000 per live birth will be saved after implementing SET. Because of the high probability of multiple pregnancies in this group of IVF patients, only SET should be performed.
authors.affiliation: Department of Obstetrics and Gynecology, University Medical Centre Nijmegen, Geert Grooteplein 10, 6525 GA, Nijmegen, The Netherlands. m.lukassen@obgyn.umcn.nl
authors.forename: H G M
authors.initials: HG
authors.lastname: Lukassen
authors.forename: D D
authors.initials: DD
authors.lastname: Braat
authors.forename: Alex M M
authors.initials: AM
authors.lastname: Wetzels
authors.forename: Gerhard A
authors.initials: GA
authors.lastname: Zielhuis
authors.forename: Eddy M M
authors.initials: EM
authors.lastname: Adang
authors.forename: Eduard
authors.initials: E
authors.lastname: Scheenjes
authors.forename: Jan A M
authors.initials: JA
authors.lastname: Kremer
mesh_terms: D000328:Adult; D001723:Birth Rate; D003362:Cost-Benefit Analysis; D004624:Embryo Transfer / Q000191:economics*; D005260:Female; D005307:Fertilization in Vitro / Q000191:economics*; D017048:Health Care Costs; D006801:Humans; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000191:economics*; D011272:Pregnancy, Multiple / Q000706:statistics & numerical data; D016896:Treatment Outcome