ORIGINAL ARTICLE Reproductive epidemiology International Committee for Monitoring Assisted Reproductive Technologies world report: Assisted

summaryanswer: ARTaccess, effectiveness and safety varymarkedly among countries.Overall, therewas an increase in the use of ICSI, single embryo transfer (SET) and frozen embryo transfer (FET). There was a decline in the multiple delivery rate (DR) and preterm birth rate. what is known already: ART is widely practiced worldwide and there is a need for its continuous monitoring to improve the com-prehensiveness and quality of ART data and services. study design, size, duration: This is a retrospective, cross-sectional survey of ART cycles undertaken worldwide in 2006. participants, setting,methods:Atotal of 2352clinics in 56countriesprovideddata.Datawereanalyzedatacountryand regiona