Table I.
Recorded ART treatment modalities between 1997 and 2016 in the three registers.
| Treatment modalities | EIM | CDC | ANZARD |
|---|---|---|---|
| Autologous | |||
| IVF | 1997 | 1995 | 1996 |
| ICSI | 1997 | 1995 | 1996 |
| FET (IVF + ICSI) | 1997 | 1995 | 1996 |
| Freeze-all | 2017 | 2008 | 2010 |
| eSET | not rec.a | 2008 | 1997b |
| PGT | 2002 | 2006 | 2004 |
| IVM | 2002 | not rec. | not rec. |
| FOR | 2006 | not rec. | not rec. |
| GIFT | not rec. | 1995 | 1996 |
| ZIFT | not rec. | 1995 | not rec. |
| Fertility protection | since 2016 | not rec. | not rec. |
| Heterologous | |||
| ED | 1998 | 1995 | 1996 |
| Embryo donation | 2009 | 2015c | 2004 |
| IVF | not rec. | not rec. | 1996 |
| ICSI | not rec. | not rec. | 1996 |
| Surrogacyd | not rec. | 2014 | 2005 |
‘not rec.’ means ‘not recorded’.
Before 2007, the transfer of a single embryo was recorded only in fresh cycles. It was not differentiated between elective and non-elective single embryo transfer.
In the Centres for Disease Control and Prevention (CDC) data sets, the distinction is made between frozen and fresh embryo donation.
The Australia and New Zealand Assisted Reproduction Database (ANZARD) data sets denominate surrogacy by the term ‘surrogacy arrangement cycles’, whereas the CDC denominates surrogacy by the term ‘gestational carrier’.
ED, egg donation; EIM, European IVF-monitoring Consortium; eSET, elective single embryo transfer; FET, frozen embryo transfer; FOR, frozen oocyte replacement; GIFT, gamete intra-Fallopian transfer; PGT, preimplantation genetic testing; ZIFT, zygote intra-Fallopian transfer.