Skip to main content

Embryology

Volume 697: debated on Monday 17 December 2007

asked Her Majesty's Government:

Further to the Written Answer by Lord Hunt of Kings Heath on 28 June (WA 159), whether they now have more up-to-date information on in vitro fertilisation treatment cycles and human embryos created since 1991, and the number of children born using human embryos created since 1991; and what percentage of non-frozen and frozen embryos created since 1991 have resulted in live births. [HL837]

The Human Fertilisation and Embryology Authority (HFEA) has a policy of continuing to correct data as new information becomes available, such as new information arising from the HFEA's historic audit project. Revised information, including data for 2005, is shown in the table.

Total number of in vitro fertilisation (IVF) treatment cycles, embryos created and treatments resulting in live births 1991 to 2005 1

Year (calendar)

Treatments involving fresh (non-frozen) embryos

Treatments involving frozen embryos (2)

Non-treatments (3)

Treatment cycles

Embryos created

Treatment cycles with live birth outcome

Treatment cycles

Treatment cycles with live birth outcome

Non-Treatment cycles

Embryos created

1991

5948

26543

822

696

105

-

-

1992

16022

75456

2114

2233

252

-

-

1993

18860

92809

2757

2939

376

-

-

1994

21345

106425

3144

3491

402

-

-

1995

24753

126078

3856

4548

542

-

-

1996

27427

148682

4764

5994

691

-

-

1997

27811

146066

4933

6178

707

-

-

1998

29078

163206

5584

6445

781

-

-

1999

28212

163840

5832

6602

844

805

575

2000

28591

170408

5982

6877

907

976

728

2001

28813

176954

6173

7416

1017

898

603

2002

29780

178627

6707

7640

1070

760

728

2003

30069

179885

6924

7449

1178

716

968

2004

32146

185581

7116

7959

1166

697

1059

2005

33591

191462

7741

8306

1313

770

1241

Notes:

(1) 2005 is the most recent year for which information is available.

(2) Embryos used in these cycles may have been created in previous years as part of fresh treatment cycles.

(3) These are IVF cycles that, although started, did not progress to embryo transfer. These embryos may have been used in a patient's later frozen treatment cycles or for embryo donation. No data are held for years 1991-98.

Source: HFEA